1/3 r + 1 = (−2/3)(r)−2
Simplify both sides of the equation.
1/3 r + 1 = (−2/3)(r)−2
1/3 r + 1 = −2/3 r + −2
1/3 r + 1 = −2/3 r − 2
Add 2/3 r to both sides.
1/3 r + 1 + 2/3 r =−2/3 r − 2 + 2/3 r
r + 1 = −2
Subtract 1 from both sides.
r + 1 − 1 = −2 − 1
r=−3
