Subtract 3/70 from 21/48
21/48 - 3/70 is 221/560.
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,
3/70 = 3 × 24/70 × 24 = 72/1680 - Subtract the two like fractions:
735/1680 - 72/1680 = 735 - 72/1680 = 663/1680 - After reducing the fraction, the answer is 221/560
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