1/2d-2/5=-7/5

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Solution for 1/2d-2/5=-7/5 equation: 


d in (-oo:+oo)

(1/2)*d-(2/5) = -7/5 // + -7/5

(1/2)*d-(2/5)-(-7/5) = 0

(1/2)*d-2/5+7/5 = 0

1/2*d+1 = 0 // - 1

1/2*d = -1 // : 1/2

d = -1/1/2

d = -2

d = -2

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