Subtract 42/20 from 40/15
1st number: 2 10/15, 2nd number: 2 2/20
40/15 - 42/20 is 17/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
40/15 = 40 × 4/15 × 4 = 160/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
42/20 = 42 × 3/20 × 3 = 126/60 - Subtract the two like fractions:
160/60 - 126/60 = 160 - 126/60 = 34/60 - After reducing the fraction, the answer is 17/30
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