Subtract 25/18 from 21/48
1st number: 21/48, 2nd number: 1 7/18
21/48 - 25/18 is -137/144.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 18 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 48 × 3 = 144,
21/48 = 21 × 3/48 × 3 = 63/144 - Likewise, for the 2nd fraction, since 18 × 8 = 144,
25/18 = 25 × 8/18 × 8 = 200/144 - Subtract the two like fractions:
63/144 - 200/144 = 63 - 200/144 = -137/144
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