-4=2/5b-9

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Solution for -4=2/5b-9 equation: 


b in (-oo:+oo)

-4 = (2/5)*b-9 // - (2/5)*b-9

9-((2/5)*b)-4 = 0

(-2/5)*b-4+9 = 0

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

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

b = -5/(-2/5)

b = 25/2

b = 25/2

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