7=2/5b-13

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Solution for 7=2/5b-13 equation: 


b in (-oo:+oo)

7 = (2/5)*b-13 // - (2/5)*b-13

7-((2/5)*b)+13 = 0

(-2/5)*b+7+13 = 0

20-2/5*b = 0 // - 20

-2/5*b = -20 // : -2/5

b = -20/(-2/5)

b = 50

b = 50

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