7b-4-5b=-4

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Solution for 7b-4-5b=-4 equation:


b in (-oo:+oo)

7*b-(5*b)-4 = -4 // + 4

7*b-(5*b)-4+4 = 0

7*b-5*b-4+4 = 0

2*b = 0 // : 2

b = 0

b = 0

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