30/20=x/4

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Solution for 30/20=x/4 equation: 


x in (-oo:+oo)

30/20 = x/4 // - x/4

30/20-(x/4) = 0

3/2-1/4*x = 0 // - 3/2

-1/4*x = -3/2 // : -1/4

x = -3/2/(-1/4)

x = 6

x = 6

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