Subtract 1/7 from 21/25
21/25 - 1/7 is 122/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 7 is 175
Next, find the equivalent fraction of both fractional numbers with denominator 175 - For the 1st fraction, since 25 × 7 = 175,
21/25 = 21 × 7/25 × 7 = 147/175 - Likewise, for the 2nd fraction, since 7 × 25 = 175,
1/7 = 1 × 25/7 × 25 = 25/175 - Subtract the two like fractions:
147/175 - 25/175 = 147 - 25/175 = 122/175
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