Move all terms not containing r to the right side of the equation.
Subtract 1 from both sides of the equation.
Subtract 1 from -17.
Divide each term by -6 and simplify.
Divide each term in -6r=-18 by -6.
Cancel the common factor of -6.
Cancel the common factor.
Divide r by 1.
Divide -18 by -6.
Solve for r -6r+1=-17