Subtract 42/63 from 28/49
28/49 - 42/63 is -2/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 63 is 441
Next, find the equivalent fraction of both fractional numbers with denominator 441 - For the 1st fraction, since 49 × 9 = 441,
28/49 = 28 × 9/49 × 9 = 252/441 - Likewise, for the 2nd fraction, since 63 × 7 = 441,
42/63 = 42 × 7/63 × 7 = 294/441 - Subtract the two like fractions:
252/441 - 294/441 = 252 - 294/441 = -42/441 - After reducing the fraction, the answer is -2/21
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