Subtract 72/21 from 56/9
1st number: 6 2/9, 2nd number: 3 9/21
56/9 - 72/21 is 176/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
56/9 = 56 × 7/9 × 7 = 392/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
72/21 = 72 × 3/21 × 3 = 216/63 - Subtract the two like fractions:
392/63 - 216/63 = 392 - 216/63 = 176/63 - In mixed form: 250/63
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