3a+4+7a=124

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Solution for 3a+4+7a=124 equation: 


a in (-oo:+oo)

3*a+7*a+4 = 124 // - 124

3*a+7*a-124+4 = 0

10*a-120 = 0 // + 120

10*a = 120 // : 10

a = 120/10

a = 12

a = 12

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