-b+4+3/7b=-20/7

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Solution for -b+4+3/7b=-20/7 equation: 


b in (-oo:+oo)

(3/7)*b-b+4 = -20/7 // + -20/7

(3/7)*b-b-(-20/7)+4 = 0

(3/7)*b-b+20/7+4 = 0

48/7-4/7*b = 0 // - 48/7

-4/7*b = -48/7 // : -4/7

b = -48/7/(-4/7)

b = 12

b = 12

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