Subtract 1/84 from 42/56
42/56 - 1/84 is 31/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 84 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
42/56 = 42 × 3/56 × 3 = 126/168 - Likewise, for the 2nd fraction, since 84 × 2 = 168,
1/84 = 1 × 2/84 × 2 = 2/168 - Subtract the two like fractions:
126/168 - 2/168 = 126 - 2/168 = 124/168 - After reducing the fraction, the answer is 31/42
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