1+2a+7a=-89

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Solution for 1+2a+7a=-89 equation: 


a in (-oo:+oo)

2*a+7*a+1 = -89 // + 89

2*a+7*a+1+89 = 0

9*a+90 = 0 // - 90

9*a = -90 // : 9

a = -90/9

a = -10

a = -10

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