Subtract 28/8 from 21/49
1st number: 21/49, 2nd number: 3 4/8
21/49 - 28/8 is -43/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 8 is 392
Next, find the equivalent fraction of both fractional numbers with denominator 392 - For the 1st fraction, since 49 × 8 = 392,
21/49 = 21 × 8/49 × 8 = 168/392 - Likewise, for the 2nd fraction, since 8 × 49 = 392,
28/8 = 28 × 49/8 × 49 = 1372/392 - Subtract the two like fractions:
168/392 - 1372/392 = 168 - 1372/392 = -1204/392 - After reducing the fraction, the answer is -43/14
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