Subtract 21/49 from 3/8
3/8 - 21/49 is -3/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 49 is 392
Next, find the equivalent fraction of both fractional numbers with denominator 392 - For the 1st fraction, since 8 × 49 = 392,
3/8 = 3 × 49/8 × 49 = 147/392 - Likewise, for the 2nd fraction, since 49 × 8 = 392,
21/49 = 21 × 8/49 × 8 = 168/392 - Subtract the two like fractions:
147/392 - 168/392 = 147 - 168/392 = -21/392 - After reducing the fraction, the answer is -3/56
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