3+3a=-a+7

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


a in (-oo:+oo)

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

3*a+a-7+3 = 0

4*a-4 = 0 // + 4

4*a = 4 // : 4

a = 4/4

a = 1

a = 1

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