Помооооогиииите!!!!!!!!!

Question

Помооооогиииите!!!!!!!!!

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Answer 1

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Answer 2

1) 72/60 = 18/(4x + 7)
72/18 = 60/(4x + 7)
4 = 60/(4x + 7)
4 * (4x + 7) = 60
16x + 28 = 60
16x = 32
x = 32/16 = 2

2) (5x - 6)/9 = 70/45
(5x - 6) = 9 * 70/45
5x - 6 = 14
5x = 20
x = 20/5 = 4