4-4a+a=13

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


a in (-oo:+oo)

a-(4*a)+4 = 13 // - 13

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

a-4*a-13+4 = 0

-3*a-9 = 0 // + 9

-3*a = 9 // : -3

a = 9/(-3)

a = -3

a = -3

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