Subtract 40/80 from 5/84
5/84 - 40/80 is -37/84.
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,
5/84 = 5 × 20/84 × 20 = 100/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
40/80 = 40 × 21/80 × 21 = 840/1680 - Subtract the two like fractions:
100/1680 - 840/1680 = 100 - 840/1680 = -740/1680 - After reducing the fraction, the answer is -37/84
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