Subtract 20/24 from 90/42
1st number: 2 6/42, 2nd number: 20/24
90/42 - 20/24 is 55/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 42 × 4 = 168,
90/42 = 90 × 4/42 × 4 = 360/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
20/24 = 20 × 7/24 × 7 = 140/168 - Subtract the two like fractions:
360/168 - 140/168 = 360 - 140/168 = 220/168 - After reducing the fraction, the answer is 55/42
- In mixed form: 113/42
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