Solve for r
r=\frac{11}{15}\approx 0.733333333
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1.32+0.2r-0.5r=1.1
Subtract 0.5r from both sides.
1.32-0.3r=1.1
Combine 0.2r and -0.5r to get -0.3r.
-0.3r=1.1-1.32
Subtract 1.32 from both sides.
-0.3r=-0.22
Subtract 1.32 from 1.1 to get -0.22.
r=\frac{-0.22}{-0.3}
Divide both sides by -0.3.
r=\frac{-22}{-30}
Expand \frac{-0.22}{-0.3} by multiplying both numerator and the denominator by 100.
r=\frac{11}{15}
Reduce the fraction \frac{-22}{-30} to lowest terms by extracting and canceling out -2.
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