Subtract 32/21 from 72/27
1st number: 2 18/27, 2nd number: 1 11/21
72/27 - 32/21 is 8/7.
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,
72/27 = 72 × 7/27 × 7 = 504/189 - Likewise, for the 2nd fraction, since 21 × 9 = 189,
32/21 = 32 × 9/21 × 9 = 288/189 - Subtract the two like fractions:
504/189 - 288/189 = 504 - 288/189 = 216/189 - After reducing the fraction, the answer is 8/7
- In mixed form: 11/7
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