Subtract 21/56 from 7/9
7/9 - 21/56 is 29/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 9 × 56 = 504,
7/9 = 7 × 56/9 × 56 = 392/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
21/56 = 21 × 9/56 × 9 = 189/504 - Subtract the two like fractions:
392/504 - 189/504 = 392 - 189/504 = 203/504 - After reducing the fraction, the answer is 29/72
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