3a-5+7a=55

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Solution for 3a-5+7a=55 equation: 


a in (-oo:+oo)

3*a+7*a-5 = 55 // - 55

3*a+7*a-55-5 = 0

10*a-60 = 0 // + 60

10*a = 60 // : 10

a = 60/10

a = 6

a = 6

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