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How do I find x In this problem?

How do I find x In this problem?-example-1

1 Answer

7 votes
x / 9 = x-7 / 7

7*x = 9*(x-7)

7x = 9x - 63

9x - 7x = 63

2x = 63

x = 63 / 2

x = 31,5

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