0.8=2/5(b-3)

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Solution for 0.8=2/5(b-3) equation: 


b in (-oo:+oo)

0.8 = (2/5)*(b-3) // - (2/5)*(b-3)

0.8-((2/5)*(b-3)) = 0

(-2/5)*(b-3)+0.8 = 0

0.8-2/5*(b-3) = 0

0.8-2/5*(b-3) = 0

2-2/5*b = 0

2-2/5*b = 0

2-2/5*b = 0 // - 2

-2/5*b = -2 // : -2/5

b = -2/(-2/5)

b = 5

b = 5

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