Combine and .

A mixed number is an addition of its whole and fractional parts.

Add and .

To write as a fraction with a common denominator, multiply by .

Combine and .

Combine the numerators over the common denominator.

Simplify the numerator.

Multiply by .

Add and .

Since the expression on each side of the equation has the same denominator, the numerators must be equal.

Multiply each term in by .

Multiply .

Multiply by .

Multiply by .

Multiply by .

Solve for d -1/2d=-5 1/2