Solve for d
d=2
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7-6+15d=31
Use the distributive property to multiply -1.5 by 4-10d.
1+15d=31
Subtract 6 from 7 to get 1.
15d=31-1
Subtract 1 from both sides.
15d=30
Subtract 1 from 31 to get 30.
d=\frac{30}{15}
Divide both sides by 15.
d=2
Divide 30 by 15 to get 2.
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