Subtract 18/21 from 56/12
1st number: 4 8/12, 2nd number: 18/21
56/12 - 18/21 is 80/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
56/12 = 56 × 7/12 × 7 = 392/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
18/21 = 18 × 4/21 × 4 = 72/84 - Subtract the two like fractions:
392/84 - 72/84 = 392 - 72/84 = 320/84 - After reducing the fraction, the answer is 80/21
- In mixed form: 317/21
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