3-7a-7a=-165

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Solution for 3-7a-7a=-165 equation: 


a in (-oo:+oo)

3-(7*a)-(7*a) = -165 // + 165

3-(7*a)-(7*a)+165 = 0

3-7*a-7*a+165 = 0

168-14*a = 0 // - 168

-14*a = -168 // : -14

a = -168/(-14)

a = 12

a = 12

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