5

Add or subtract as indicated.$$-6.3-15.8$$...

Question

Add or subtract as indicated.$$-6.3-15.8$$

Add or subtract as indicated. $$-6.3-15.8$$



Answers

Add or subtract as indicated. $$-6.3-15.8$$

Let's look at the problem. 3/7 minus negative. 18 First thing I need to do is find the least common denominator of seven and eight, which would be 56. Rewrite each problem with the denominator of 56. 56. Divide. About seven is ate some in a multiply times eight in the numerator to get 24 56 about about eight. So times seven and the numerator gives me negative seven. Now rewrite with nominator of 56 in the numerator, I have 24 minus negative seven to subtract imagers. We want to rewrite as an addition problem with the added of inverse. So it's going to become 24 plus the inverse of negative +77 to positive numbers. Just add them together. That gives you 31 over 56. This isn't simplified form.

Adding decimals. Follow the same rules. If I had seven and three tents minus 11 and two tents, I just need to follow the same rules. It's subtraction. So I'm going to rewrite it as an addition problem using the inverse, which would be negative 11 and to chance. At this point, the signs are different. So that means I actually need to subtract. And I'm subtracting the absolute values. The absolute value of negative 11 and two tenses larger. So my answer is going to be negative. 11 and two tents, seven and three tents. Subtraction I'm gonna borrow that becomes 10. This is a 12 12 minus three is nine 10 minus seven is three. Final answer negative three and 9/10.

And the problem. 14 plus negative nine brackets are used because there were parentheses around the negative. Nine brackets don't mean anything different. They're just a different grouping symbol. After I find the sum of 14 and negative nine, I'm asked to add it to the difference of one an eight. So any defined the solution to this part, then this part. And at the end, I'll combine those 14 plus negative nine. Do not need to rewrite it because it's already. Addition. I just need to think about the absolute values. 14 and nine find the difference, which would be five, which has the greater absolute value. Positive. 14. So it's a positive five, and I want to add that to the difference of one an eight. So I'll rewrite this as one. Plus, the inverse of eight is negative. H. Different signs. Think about the absolute values. Eight. Minus one is seven. This had a greater absolute value and it was negative. So now I have five plus negative seven different signs. The difference of seven and five is, too. The larger absolute value waas with the negative seven, so this would be a negative too

Let's take four nights and subtract the sun of 2/3 and 56 The order of operations requires me to first find the sum of what's in parentheses. I need the least common denominator, and the least common denominator of three and six would be six. So I'm going to rewrite each fraction with the denominator of six six. Divided by three is too. So two times two gives me for in the numerator six divide about six was one. This remains as five 46 plus 56 is nine ever six. Now I need to bring this portion down, and I've got four nights minus the sum of that which is 9/6. I again need to find the least common denominator, which would be 18 going to rewrite each fraction with the denominator of 18 18 divided bananas, too. So, four times to gives me a numerator of eight six. Divided by 18 is three. Nine times three is 27 so let's combine this into one quantity. We have eight minus 27 over 18 eight, plus the unversity negative 27. I need to find the difference of eight and 27 which would be 19 and it's important to recognize that it is a negative 19 because this was the larger absolute value. Negative 19 over 18 which could also be expressed as negative one and 1/18.


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