1+3a-4a=9

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Solution for 1+3a-4a=9 equation: 


a in (-oo:+oo)

3*a-(4*a)+1 = 9 // - 9

3*a-(4*a)-9+1 = 0

3*a-4*a-9+1 = 0

-a-8 = 0 // + 8

-a = 8 // * -1

a = -8

a = -8

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