Subtract 56/72 from 90/21
1st number: 4 6/21, 2nd number: 56/72
90/21 - 56/72 is 221/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 21 × 24 = 504,
90/21 = 90 × 24/21 × 24 = 2160/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
56/72 = 56 × 7/72 × 7 = 392/504 - Subtract the two like fractions:
2160/504 - 392/504 = 2160 - 392/504 = 1768/504 - After reducing the fraction, the answer is 221/63
- In mixed form: 332/63
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