90-x=1/4(x)

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Solution for 90-x=1/4(x) equation: 


x in (-oo:+oo)

90-x = (1/4)*x // - (1/4)*x

90-x-((1/4)*x) = 0

(-1/4)*x-x+90 = 0

90-5/4*x = 0 // - 90

-5/4*x = -90 // : -5/4

x = -90/(-5/4)

x = 72

x = 72

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