Subtract 45/20 from 42/24
1st number: 1 18/24, 2nd number: 2 5/20
42/24 - 45/20 is -1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 20 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
42/24 = 42 × 5/24 × 5 = 210/120 - Likewise, for the 2nd fraction, since 20 × 6 = 120,
45/20 = 45 × 6/20 × 6 = 270/120 - Subtract the two like fractions:
210/120 - 270/120 = 210 - 270/120 = -60/120 - After reducing the fraction, the answer is -1/2
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