Solve for d
d=68
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15+\frac{1}{2}d=49
Swap sides so that all variable terms are on the left hand side.
\frac{1}{2}d=49-15
Subtract 15 from both sides.
\frac{1}{2}d=34
Subtract 15 from 49 to get 34.
d=34\times 2
Multiply both sides by 2, the reciprocal of \frac{1}{2}.
d=68
Multiply 34 and 2 to get 68.
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