1

Yvonne is thinking of a number. Fifty, decreased by three times the number, is the same as seven times the number, increased by 80. What is Yvonne's number?

Question

Yvonne is thinking of a number. Fifty, decreased by three times the number, is the same as seven times the number, increased by 80. What is Yvonne's number?
Yvonne is thinking of a number. Fifty, decreased by three times the number, is the same as seven times the number, increased by 80. What is Yvonne's number?

Answers

#x = -3#

Explanation:

Take note of the use of the commas which indicate the order of the operations.

#50 - 3x = 7x + 80#

#50 - 80 = 7x + 3x#
#-30 = 10x#

#x = -3#


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