Solve for d
d=9
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7d+4-10d=-23
Subtract 10d from both sides.
-3d+4=-23
Combine 7d and -10d to get -3d.
-3d=-23-4
Subtract 4 from both sides.
-3d=-27
Subtract 4 from -23 to get -27.
d=\frac{-27}{-3}
Divide both sides by -3.
d=9
Divide -27 by -3 to get 9.
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