Evaluate
\frac{1}{49}-\frac{3}{4t}
Factor
\frac{4t-147}{196t}
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\frac{1}{49}-\frac{3}{4t}
Reduce the fraction \frac{2}{98} to lowest terms by extracting and canceling out 2.
\frac{4t}{196t}-\frac{3\times 49}{196t}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of 49 and 4t is 196t. Multiply \frac{1}{49} times \frac{4t}{4t}. Multiply \frac{3}{4t} times \frac{49}{49}.
\frac{4t-3\times 49}{196t}
Since \frac{4t}{196t} and \frac{3\times 49}{196t} have the same denominator, subtract them by subtracting their numerators.
\frac{4t-147}{196t}
Do the multiplications in 4t-3\times 49.
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