Subtract 21/72 from 7/48
7/48 - 21/72 is -7/48.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 72 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 48 × 3 = 144,
7/48 = 7 × 3/48 × 3 = 21/144 - Likewise, for the 2nd fraction, since 72 × 2 = 144,
21/72 = 21 × 2/72 × 2 = 42/144 - Subtract the two like fractions:
21/144 - 42/144 = 21 - 42/144 = -21/144 - After reducing the fraction, the answer is -7/48
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