Subtract 42/12 from 49/28
1st number: 1 21/28, 2nd number: 3 6/12
49/28 - 42/12 is -7/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
49/28 = 49 × 3/28 × 3 = 147/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
42/12 = 42 × 7/12 × 7 = 294/84 - Subtract the two like fractions:
147/84 - 294/84 = 147 - 294/84 = -147/84 - After reducing the fraction, the answer is -7/4
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