8-2d/5+11=21

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Solution for 8-2d/5+11=21 equation: 


d in (-oo:+oo)

8-((2*d)/5)+11 = 21 // - 21

8-((2*d)/5)-21+11 = 0

(-2/5)*d-21+8+11 = 0

-2/5*d-2 = 0 // + 2

-2/5*d = 2 // : -2/5

d = 2/(-2/5)

d = -5

d = -5

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