Solve for c
c=4.75
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0.8c=7.2-3.4
Subtract 3.4 from both sides.
0.8c=3.8
Subtract 3.4 from 7.2 to get 3.8.
c=\frac{3.8}{0.8}
Divide both sides by 0.8.
c=\frac{38}{8}
Expand \frac{3.8}{0.8} by multiplying both numerator and the denominator by 10.
c=\frac{19}{4}
Reduce the fraction \frac{38}{8} to lowest terms by extracting and canceling out 2.
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