1/4x-1/2y=-9

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Solution for 1/4x-1/2y=-9 equation: 


x in (-oo:+oo)

(1/4)*x-((1/2)*y) = -9 // + 9

(1/4)*x-((1/2)*y)+9 = 0

(1/4)*x+(-1/2)*y+9 = 0

1/4*x-1/2*y+9 = 0 // - 9-1/2*y

1/4*x = -(9-1/2*y) // : 1/4

x = (-(9-1/2*y))/1/4

x = -4*(9-1/2*y)

x = -4*(9-1/2*y)

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