Subtract 56/70 from 21/48
21/48 - 56/70 is -29/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 70 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 48 × 35 = 1680,
21/48 = 21 × 35/48 × 35 = 735/1680 - Likewise, for the 2nd fraction, since 70 × 24 = 1680,
56/70 = 56 × 24/70 × 24 = 1344/1680 - Subtract the two like fractions:
735/1680 - 1344/1680 = 735 - 1344/1680 = -609/1680 - After reducing the fraction, the answer is -29/80
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