Subtract 21/7 from 7/36
1st number: 7/36, 2nd number: 3 0/7
7/36 - 21/7 is -101/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 7 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
7/36 = 7 × 7/36 × 7 = 49/252 - Likewise, for the 2nd fraction, since 7 × 36 = 252,
21/7 = 21 × 36/7 × 36 = 756/252 - Subtract the two like fractions:
49/252 - 756/252 = 49 - 756/252 = -707/252 - After reducing the fraction, the answer is -101/36
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