-39=7b+5b+9

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Solution for -39=7b+5b+9 equation: 


b in (-oo:+oo)

-39 = 7*b+5*b+9 // - 7*b+5*b+9

-(7*b)-(5*b)-39-9 = 0

-7*b-5*b-39-9 = 0

-12*b-48 = 0 // + 48

-12*b = 48 // : -12

b = 48/(-12)

b = -4

b = -4

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