13=4a+a-2

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Solution for 13=4a+a-2 equation: 


a in (-oo:+oo)

13 = 4*a+a-2 // - 4*a+a-2

2-(4*a)-a+13 = 0

2-4*a-a+13 = 0

15-5*a = 0 // - 15

-5*a = -15 // : -5

a = -15/(-5)

a = 3

a = 3

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