Solve for c
c = \frac{3200}{31} = 103\frac{7}{31} \approx 103.225806452
Assign c
c≔\frac{3200}{31}
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c=\frac{3.2}{3.1}\times 100
Subtract 4.2 from 7.4 to get 3.2.
c=\frac{32}{31}\times 100
Expand \frac{3.2}{3.1} by multiplying both numerator and the denominator by 10.
c=\frac{32\times 100}{31}
Express \frac{32}{31}\times 100 as a single fraction.
c=\frac{3200}{31}
Multiply 32 and 100 to get 3200.
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