Subtract 3/36 from 20/42
20/42 - 3/36 is 11/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 42 × 6 = 252,
20/42 = 20 × 6/42 × 6 = 120/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
3/36 = 3 × 7/36 × 7 = 21/252 - Subtract the two like fractions:
120/252 - 21/252 = 120 - 21/252 = 99/252 - After reducing the fraction, the answer is 11/28
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