7/10d-21/10

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Solution for 7/10d-21/10 equation: 


d in (-oo:+oo)

(7/10)*d-(21/10) = 0

(7/10)*d-21/10 = 0

7/10*d-21/10 = 0 // + 21/10

7/10*d = 21/10 // : 7/10

d = 21/10/7/10

d = 3

d = 3

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