Question

5/x = 7/x - 4
someone tell me the answer quickly​

Answer 1

$\frac{5}{x} = \frac{7}{x - 4}$

cross multiplication

$5(x - 4) = 7x \\ \\ 5x - 20 = 7x \\ \\ 5x - 7x - 20 = 0 \\ \\ - 2x - 20 = 0 \\ \\ - 2x = 20 \\ \\ x = \frac{20}{ - 2} \\ \\ x = - 10$

x = -10 is the answer

Answer 2

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