Solve for r
r=1
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12r-1=11
Combine 6r and 6r to get 12r.
12r=11+1
Add 1 to both sides.
12r=12
Add 11 and 1 to get 12.
r=\frac{12}{12}
Divide both sides by 12.
r=1
Divide 12 by 12 to get 1.
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