Subtract 21/36 from 42/7
1st number: 6 0/7, 2nd number: 21/36
42/7 - 21/36 is 65/12.
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,
42/7 = 42 × 36/7 × 36 = 1512/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
21/36 = 21 × 7/36 × 7 = 147/252 - Subtract the two like fractions:
1512/252 - 147/252 = 1512 - 147/252 = 1365/252 - After reducing the fraction, the answer is 65/12
- In mixed form: 55/12
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