Subtract 21/25 from 7/15
7/15 - 21/25 is -28/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 25 is 75
Next, find the equivalent fraction of both fractional numbers with denominator 75 - For the 1st fraction, since 15 × 5 = 75,
7/15 = 7 × 5/15 × 5 = 35/75 - Likewise, for the 2nd fraction, since 25 × 3 = 75,
21/25 = 21 × 3/25 × 3 = 63/75 - Subtract the two like fractions:
35/75 - 63/75 = 35 - 63/75 = -28/75
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