-1/2b+9=25/2

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Solution for -1/2b+9=25/2 equation: 


b in (-oo:+oo)

(-1/2)*b+9 = 25/2 // - 25/2

(-1/2)*b-(25/2)+9 = 0

(-1/2)*b-25/2+9 = 0

-1/2*b-7/2 = 0 // + 7/2

-1/2*b = 7/2 // : -1/2

b = 7/2/(-1/2)

b = -7

b = -7

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