5

(2x + xy )dr + (rlyUs Exect Medkdycos(*) 1+3v3Ux Scnerable Mathody(0)Y(2) = -7 , *>0 Use Substitution Method:ryi+4r+yZ...

Question

(2x + xy )dr + (rlyUs Exect Medkdycos(*) 1+3v3Ux Scnerable Mathody(0)Y(2) = -7 , *>0 Use Substitution Method:ryi+4r+yZ

(2x + xy )dr + (rly Us Exect Medkd ycos(*) 1+3v3 Ux Scnerable Mathod y(0) Y(2) = -7 , *>0 Use Substitution Method: ryi+4r+yZ



Answers

Solve by substitution. $\begin{aligned} x &=y+1 \\ x+2 y &=7 \end{aligned}$

Okay, so in this problem would have system off to equations. The 1st 1 is two X plus y equals seven. The 2nd 1 is X Plus two y equals two, and we're requested to apply the substitution method to solve it. First, we're going to ah, least why That's a function off eggs, which is why equal seven minus two X. We pass it to eggs with the opposite signed to the right, and then we will replace this. Why? In the second equation So we have X plus two y equals two, meaning that we have eggs blessed to. And there we will replace the question here. Seven minus two x equal. Stoop these leaders to eggs less 14 miners for X equals two. So we have ex miners for X Plus 14 equals two. Then we would have minor three eggs equals two miners. 14. We passed the 14 to the right side of equation with the opposite side. Then we would have finally minus three X equals minus 12th meaning that X is for to find why we will replace X in any off. The first given equation, for example, of you is the first question we will have the two x plus y equals seven Meaning the two times four plus. Why equal seven. This is eight plus. Why equal seven on This is why equal seven minus eight. Finally we get up. Why is minus one then? The final solution is for forex on minors, one for away.

Here were asked to use substitution to solve the system. We can rewrite the first equation. And why will seven minus two x and substitute in the second equation? So we're gonna expose two times why which we know seven miles to X I received was to which is going to give us X Plus 14 4 X equals two is gonna give us negative three acts equal to minus 14 inches. Negative. 12. So X is gonna equal four. Once we know that X equals four, we can say about seven miles. Two times four is negative one. Now we have the

Okay, so here. Compare Why? Really? For both in creation. So here, if I x square bless two x minus salmon. Is he going to hear to explore Blessed one on your if i x squared plus two X minus seven minus two X squared minus. Money is equal to zero. No, my expert minus two x will That is equal to three. Expert last two weeks and here minus seven minus one that is equal to minus eight. His supporters zero not here. Middle from Mr X. So we can write your six x minus forex. Right, But you're 66 minus four extent is equal to zero. Right? So victor out the export of us two terms, But here three x multiply by express to and if you're pictured out minus for for the last two times. Now we can victor out X plus two For your explains to multiply by three x minus four is equal to zero, which means acceptable to minus two rand exit will do or by three. Now put the value of X in the first equation. So our first degree sinese who expert blessed one take the first value of X released minus two. But you're wise people to through multiplied by minus Stovall Square plus one that is equal to eight plus one and that is equal to nine. So our first solar sonny's minus two and night. Now take X is equal do or by three. So here, wise equal to do multiply my for my three whole square plus one of your why is it going to multiply by 16 by nine? Less one 16 money Pravit With that people do 30 to find your 32 by nine plus one now here nine multiplied by one that is nine and told you took less nine that is equal to 41. So you're 41 by nine. So our second sortie Sonny's four by three kind 41 by night because he is over or solution and visit our second Saunderson. Thank you

Okay. In this particular case, the system of equation is given X minus two Y is equal to seven. Okay, on X is equals to wipe less for All right, So if I just assumed this equations is one into which means X minus two y z equals 27 as a question one on X minus, by or essentially X is equals to by place for as equation to write. So have just put the veil off to in equation. When the simplest in this too. Why bless four minus two. Why is it was 27? What does it mean? It means that minus off by this cancels out right as it was to seven minus four, which is equal soup tree. So why simply comes out B minus three, right? Once we have bi is equal to minus three, we have X equals to spy place for right. So minus three. Bless for so minus three plus four. It's simply bun. Okay, so therefore we can say X is equals to one and bicycles to minus tree as the final answer


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