Subtract 12/36 from 10/42
10/42 - 12/36 is -2/21.
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,
10/42 = 10 × 6/42 × 6 = 60/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
12/36 = 12 × 7/36 × 7 = 84/252 - Subtract the two like fractions:
60/252 - 84/252 = 60 - 84/252 = -24/252 - After reducing the fraction, the answer is -2/21
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