Subtract 16/72 from 21/25
21/25 - 16/72 is 139/225.
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,
16/72 = 16 × 25/72 × 25 = 400/1800 - Subtract the two like fractions:
1512/1800 - 400/1800 = 1512 - 400/1800 = 1112/1800 - After reducing the fraction, the answer is 139/225
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