Subtract 8/9 from 21/56
21/56 - 8/9 is -37/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 9 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
21/56 = 21 × 9/56 × 9 = 189/504 - Likewise, for the 2nd fraction, since 9 × 56 = 504,
8/9 = 8 × 56/9 × 56 = 448/504 - Subtract the two like fractions:
189/504 - 448/504 = 189 - 448/504 = -259/504 - After reducing the fraction, the answer is -37/72
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