Solve for d
d = \frac{57}{2} = 28\frac{1}{2} = 28.5
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2d+9=11\times 6
Multiply both sides by 6.
2d+9=66
Multiply 11 and 6 to get 66.
2d=66-9
Subtract 9 from both sides.
2d=57
Subtract 9 from 66 to get 57.
d=\frac{57}{2}
Divide both sides by 2.
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