Solve for r
r=2
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45r+2=92
Combine 72r and -27r to get 45r.
45r=92-2
Subtract 2 from both sides.
45r=90
Subtract 2 from 92 to get 90.
r=\frac{90}{45}
Divide both sides by 45.
r=2
Divide 90 by 45 to get 2.
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