Subtract 70/42 from 20/54
1st number: 20/54, 2nd number: 1 28/42
20/54 - 70/42 is -35/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 42 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
20/54 = 20 × 7/54 × 7 = 140/378 - Likewise, for the 2nd fraction, since 42 × 9 = 378,
70/42 = 70 × 9/42 × 9 = 630/378 - Subtract the two like fractions:
140/378 - 630/378 = 140 - 630/378 = -490/378 - After reducing the fraction, the answer is -35/27
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