Solve for y
y=7.85
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y=\frac{3.14}{0.4}
Divide both sides by 0.4.
y=\frac{314}{40}
Expand \frac{3.14}{0.4} by multiplying both numerator and the denominator by 100.
y=\frac{157}{20}
Reduce the fraction \frac{314}{40} to lowest terms by extracting and canceling out 2.
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