Subtract 3/72 from 21/25
21/25 - 3/72 is 479/600.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 72 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 25 × 72 = 1800,
21/25 = 21 × 72/25 × 72 = 1512/1800 - Likewise, for the 2nd fraction, since 72 × 25 = 1800,
3/72 = 3 × 25/72 × 25 = 75/1800 - Subtract the two like fractions:
1512/1800 - 75/1800 = 1512 - 75/1800 = 1437/1800 - After reducing the fraction, the answer is 479/600
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