Subtract 63/28 from 21/72
1st number: 21/72, 2nd number: 2 7/28
21/72 - 63/28 is -47/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 28 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
21/72 = 21 × 7/72 × 7 = 147/504 - Likewise, for the 2nd fraction, since 28 × 18 = 504,
63/28 = 63 × 18/28 × 18 = 1134/504 - Subtract the two like fractions:
147/504 - 1134/504 = 147 - 1134/504 = -987/504 - After reducing the fraction, the answer is -47/24
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