-7a+9=a-71

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Solution for -7a+9=a-71 equation: 


a in (-oo:+oo)

9-7*a = a-71 // - a-71

9-7*a-a+71 = 0

80-8*a = 0 // - 80

-8*a = -80 // : -8

a = -80/(-8)

a = 10

a = 10

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