Subtract 3/21 from 25/27
25/27 - 3/21 is 148/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 21 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
25/27 = 25 × 7/27 × 7 = 175/189 - Likewise, for the 2nd fraction, since 21 × 9 = 189,
3/21 = 3 × 9/21 × 9 = 27/189 - Subtract the two like fractions:
175/189 - 27/189 = 175 - 27/189 = 148/189
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