-4/7d+7=143/21

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Solution for -4/7d+7=143/21 equation: 


d in (-oo:+oo)

(-4/7)*d+7 = 143/21 // - 143/21

(-4/7)*d-(143/21)+7 = 0

(-4/7)*d-143/21+7 = 0

4/21-4/7*d = 0 // - 4/21

-4/7*d = -4/21 // : -4/7

d = -4/21/(-4/7)

d = 1/3

d = 1/3

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