(3+a)/2=5

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Solution for (3+a)/2=5 equation: 


a in (-oo:+oo)

(a+3)/2 = 5 // - 5

(a+3)/2-5 = 0

(a+3)/2+(-5*2)/2 = 0

a-5*2+3 = 0

a-7 = 0

(a-7)/2 = 0

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

a-7 = 0

a-7 = 0 // + 7

a = 7

a = 7

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