-3/2(a-2)=21

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Solution for -3/2(a-2)=21 equation: 


a in (-oo:+oo)

(-3/2)*(a-2) = 21 // - 21

(-3/2)*(a-2)-21 = 0

-3/2*(a-2)-21 = 0

-3/2*(a-2)-21 = 0

-3/2*a-18 = 0

-3/2*a-18 = 0

-3/2*a-18 = 0 // + 18

-3/2*a = 18 // : -3/2

a = 18/(-3/2)

a = -12

a = -12

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