Subtract 10/36 from 42/21
1st number: 2 0/21, 2nd number: 10/36
42/21 - 10/36 is 31/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 21 × 12 = 252,
42/21 = 42 × 12/21 × 12 = 504/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
10/36 = 10 × 7/36 × 7 = 70/252 - Subtract the two like fractions:
504/252 - 70/252 = 504 - 70/252 = 434/252 - After reducing the fraction, the answer is 31/18
- In mixed form: 113/18
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