Subtract 21/36 from 8/7
1st number: 1 1/7, 2nd number: 21/36
8/7 - 21/36 is 47/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 7 × 36 = 252,
8/7 = 8 × 36/7 × 36 = 288/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
21/36 = 21 × 7/36 × 7 = 147/252 - Subtract the two like fractions:
288/252 - 147/252 = 288 - 147/252 = 141/252 - After reducing the fraction, the answer is 47/84
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