-1+5a+2a=62

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Solution for -1+5a+2a=62 equation: 


a in (-oo:+oo)

5*a+2*a-1 = 62 // - 62

5*a+2*a-62-1 = 0

7*a-63 = 0 // + 63

7*a = 63 // : 7

a = 63/7

a = 9

a = 9

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