Subtract 21/56 from 70/21
1st number: 3 7/21, 2nd number: 21/56
70/21 - 21/56 is 71/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
70/21 = 70 × 8/21 × 8 = 560/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
21/56 = 21 × 3/56 × 3 = 63/168 - Subtract the two like fractions:
560/168 - 63/168 = 560 - 63/168 = 497/168 - After reducing the fraction, the answer is 71/24
- In mixed form: 223/24
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