-6a-9=7a-9

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Solution for -6a-9=7a-9 equation: 


a in (-oo:+oo)

-6*a-9 = 7*a-9 // - 7*a-9

9-6*a-(7*a)-9 = 0

9-6*a-7*a-9 = 0

-13*a = 0 // : -13

a = 0

a = 0

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