Subtract 5/80 from 3/84
3/84 - 5/80 is -3/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 84 × 20 = 1680,
3/84 = 3 × 20/84 × 20 = 60/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
5/80 = 5 × 21/80 × 21 = 105/1680 - Subtract the two like fractions:
60/1680 - 105/1680 = 60 - 105/1680 = -45/1680 - After reducing the fraction, the answer is -3/112
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