Subtract 20/54 from 70/42
1st number: 1 28/42, 2nd number: 20/54
70/42 - 20/54 is 35/27.
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,
70/42 = 70 × 9/42 × 9 = 630/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
20/54 = 20 × 7/54 × 7 = 140/378 - Subtract the two like fractions:
630/378 - 140/378 = 630 - 140/378 = 490/378 - After reducing the fraction, the answer is 35/27
- In mixed form: 18/27
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