Subtract 30/20 from 42/16
1st number: 2 10/16, 2nd number: 1 10/20
42/16 - 30/20 is 9/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 20 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
42/16 = 42 × 5/16 × 5 = 210/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
30/20 = 30 × 4/20 × 4 = 120/80 - Subtract the two like fractions:
210/80 - 120/80 = 210 - 120/80 = 90/80 - After reducing the fraction, the answer is 9/8
- In mixed form: 11/8
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