Subtract 7/9 from 28/49
28/49 - 7/9 is -13/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 9 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 9 × 49 = 441,
7/9 = 7 × 49/9 × 49 = 343/441 - Subtract the two like fractions:
252/441 - 343/441 = 252 - 343/441 = -91/441 - After reducing the fraction, the answer is -13/63
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