Subtract 21/54 from 75/42
1st number: 1 33/42, 2nd number: 21/54
75/42 - 21/54 is 88/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
75/42 = 75 × 9/42 × 9 = 675/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
21/54 = 21 × 7/54 × 7 = 147/378 - Subtract the two like fractions:
675/378 - 147/378 = 675 - 147/378 = 528/378 - After reducing the fraction, the answer is 88/63
- In mixed form: 125/63
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