7(-7+d)=-49 - solution

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Solution for 7(-7+d)=-49 equation:

d in (-oo:+oo)

7*(d-7) = -49 // + 49

7*(d-7)+49 = 0

7*(d-7)+49 = 0

7*d = 0

7*d = 0

7*d = 0 // : 7

d = 0

d = 0

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