Subtract 1/30 from 42/20
1st number: 2 2/20, 2nd number: 1/30
42/20 - 1/30 is 31/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
42/20 = 42 × 3/20 × 3 = 126/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
1/30 = 1 × 2/30 × 2 = 2/60 - Subtract the two like fractions:
126/60 - 2/60 = 126 - 2/60 = 124/60 - After reducing the fraction, the answer is 31/15
- In mixed form: 21/15
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