3b+4=7b-4

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Solution for 3b+4=7b-4 equation: 


b in (-oo:+oo)

3*b+4 = 7*b-4 // - 7*b-4

3*b-(7*b)+4+4 = 0

3*b-7*b+4+4 = 0

8-4*b = 0 // - 8

-4*b = -8 // : -4

b = -8/(-4)

b = 2

b = 2

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