1/4x-x=-9 - solution

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Solution for 1/4x-x=-9 equation:

x in (-oo:+oo)

(1/4)*x-x = -9 // + 9

(1/4)*x-x+9 = 0

9-3/4*x = 0 // - 9

-3/4*x = -9 // : -3/4

x = -9/(-3/4)

x = 12

x = 12

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