1/2(x+3)=-9

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Solution for 1/2(x+3)=-9 equation: 


x in (-oo:+oo)

(1/2)*(x+3) = -9 // + 9

(1/2)*(x+3)+9 = 0

1/2*(x+3)+9 = 0

1/2*(x+3)+9 = 0

1/2*x+21/2 = 0

1/2*x+21/2 = 0

1/2*x+21/2 = 0 // - 21/2

1/2*x = -21/2 // : 1/2

x = -21/2/1/2

x = -21

x = -21

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