jackyxoxoxo jackyxoxoxo

07-03-2017
Mathematics

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The sum of two times a number and 5 more than the number is the same as the difference between -15 and twice the number. What is the number?

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Moriah0Hope Moriah0Hope

08-03-2017

(2x)(x+5) = 2x-15

4x^2 + 5x = 2x-15

4x^2 = 7x -15

16x = 7x - 15

16x + 15 = 7x

2 2/7 + 2 1/7 = x

x = 4 3/7

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