Solve for R
R=2.25
Assign R
R≔2.25
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R=\frac{1.8}{0.04\times 20}
Subtract 3.2 from 5 to get 1.8.
R=\frac{1.8}{0.8}
Multiply 0.04 and 20 to get 0.8.
R=\frac{18}{8}
Expand \frac{1.8}{0.8} by multiplying both numerator and the denominator by 10.
R=\frac{9}{4}
Reduce the fraction \frac{18}{8} to lowest terms by extracting and canceling out 2.
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