-120=3a+7a-10

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Solution for -120=3a+7a-10 equation: 


a in (-oo:+oo)

-120 = 3*a+7*a-10 // - 3*a+7*a-10

10-(3*a)-(7*a)-120 = 0

10-3*a-7*a-120 = 0

-10*a-110 = 0 // + 110

-10*a = 110 // : -10

a = 110/(-10)

a = -11

a = -11

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