Solve for d
d=86
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\frac{-49}{-7}=d-79
Divide both sides by -7.
7=d-79
Divide -49 by -7 to get 7.
d-79=7
Swap sides so that all variable terms are on the left hand side.
d=7+79
Add 79 to both sides.
d=86
Add 7 and 79 to get 86.
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