-7=1/2a

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Solution for -7=1/2a equation: 


a in (-oo:+oo)

-7 = (1/2)*a // - (1/2)*a

-((1/2)*a)-7 = 0

(-1/2)*a-7 = 0

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

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

a = 7/(-1/2)

a = -14

a = -14

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