-7=3a+3a-4

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


a in (-oo:+oo)

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

4-(3*a)-(3*a)-7 = 0

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

-6*a-3 = 0 // + 3

-6*a = 3 // : -6

a = 3/(-6)

a = -1/2

a = -1/2

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