11=a+3a-1

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Solution for 11=a+3a-1 equation: 


a in (-oo:+oo)

11 = a+3*a-1 // - a+3*a-1

1-a-(3*a)+11 = 0

1-a-3*a+11 = 0

12-4*a = 0 // - 12

-4*a = -12 // : -4

a = -12/(-4)

a = 3

a = 3

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