(3/15)=(x/20)

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Solution for (3/15)=(x/20) equation: 


x in (-oo:+oo)

3/15 = x/20 // - x/20

3/15-(x/20) = 0

1/5-1/20*x = 0 // - 1/5

-1/20*x = -1/5 // : -1/20

x = -1/5/(-1/20)

x = 4

x = 4

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