2+7a+2a=20

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Solution for 2+7a+2a=20 equation: 


a in (-oo:+oo)

7*a+2*a+2 = 20 // - 20

7*a+2*a-20+2 = 0

9*a-18 = 0 // + 18

9*a = 18 // : 9

a = 18/9

a = 2

a = 2

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