-1/2(2y+9)

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Solution for -1/2(2y+9) equation: 


y in (-oo:+oo)

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

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

2*y+9 = 0 // - 9

2*y = -9 // : 2

y = -9/2

y = -9/2

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