Subtract 5/7 from 21/48
21/48 - 5/7 is -31/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 7 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 48 × 7 = 336,
21/48 = 21 × 7/48 × 7 = 147/336 - Likewise, for the 2nd fraction, since 7 × 48 = 336,
5/7 = 5 × 48/7 × 48 = 240/336 - Subtract the two like fractions:
147/336 - 240/336 = 147 - 240/336 = -93/336 - After reducing the fraction, the answer is -31/112
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