3b-9=7b-57

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Solution for 3b-9=7b-57 equation: 


b in (-oo:+oo)

3*b-9 = 7*b-57 // - 7*b-57

3*b-(7*b)-9+57 = 0

3*b-7*b-9+57 = 0

48-4*b = 0 // - 48

-4*b = -48 // : -4

b = -48/(-4)

b = 12

b = 12

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