28+2a=1/2a+7

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Solution for 28+2a=1/2a+7 equation: 


a in (-oo:+oo)

2*a+28 = (1/2)*a+7 // - (1/2)*a+7

2*a-((1/2)*a)-7+28 = 0

2*a+(-1/2)*a-7+28 = 0

3/2*a+21 = 0 // - 21

3/2*a = -21 // : 3/2

a = -21/3/2

a = -14

a = -14

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