1-1/2b+1/5b=-4/5

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Solution for 1-1/2b+1/5b=-4/5 equation: 


b in (-oo:+oo)

(1/5)*b-((1/2)*b)+1 = -4/5 // + -4/5

(1/5)*b-((1/2)*b)-(-4/5)+1 = 0

(-1/2)*b+(1/5)*b+4/5+1 = 0

9/5-3/10*b = 0 // - 9/5

-3/10*b = -9/5 // : -3/10

b = -9/5/(-3/10)

b = 6

b = 6

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