Move all terms not containing d to the right side of the equation.
Add 0.5 to both sides of the equation.
Add 17.5 and 0.5.
Divide each term by 9 and simplify.
Divide each term in 9d=18 by 9.
Cancel the common factor of 9.
Cancel the common factor.
Divide d by 1.
Divide 18 by 9.
Solve for d 9d-0.5=17.5