-9-4b=3b-72

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Solution for -9-4b=3b-72 equation: 


b in (-oo:+oo)

-(4*b)-9 = 3*b-72 // - 3*b-72

72-(4*b)-(3*b)-9 = 0

72-4*b-3*b-9 = 0

63-7*b = 0 // - 63

-7*b = -63 // : -7

b = -63/(-7)

b = 9

b = 9

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