5+7a=12

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Solution for 5+7a=12 equation: 


a in (-oo:+oo)

7*a+5 = 12 // - 12

7*a-12+5 = 0

7*a-7 = 0 // + 7

7*a = 7 // : 7

a = 7/7

a = 1

a = 1

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