90/10=x/20

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Solution for 90/10=x/20 equation: 


x in (-oo:+oo)

90/10 = x/20 // - x/20

90/10-(x/20) = 0

9-1/20*x = 0 // - 9

-1/20*x = -9 // : -1/20

x = -9/(-1/20)

x = 180

x = 180

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