X/9-x/7=4

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Solution for X/9-x/7=4 equation: 


x in (-oo:+oo)

X/9-(x/7) = 4 // - 4

X/9-(x/7)-4 = 0

1/9*X-1/7*x-4 = 0 // - 1/9*X-4

-1/7*x = -(1/9*X-4) // : -1/7

x = (-(1/9*X-4))/(-1/7)

x = -7*(4-(1/9*X))

x = -7*(4-(1/9*X))

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