Question

if x minus one upon X + 1 is equal to 7 upon 9 find x

Answer 1

x-1/x+1 = 7/9
9 (x-1)= 7(x+1)
9x-9 = 7x+7.
9x -7x= +7 +9
2x = 16
x=8

value of x is 8

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Answer 2

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