Subtract 21/25 from 10/72
10/72 - 21/25 is -631/900.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 25 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 72 × 25 = 1800,
10/72 = 10 × 25/72 × 25 = 250/1800 - Likewise, for the 2nd fraction, since 25 × 72 = 1800,
21/25 = 21 × 72/25 × 72 = 1512/1800 - Subtract the two like fractions:
250/1800 - 1512/1800 = 250 - 1512/1800 = -1262/1800 - After reducing the fraction, the answer is -631/900
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