Subtract 21/42 from 48/20
1st number: 2 8/20, 2nd number: 21/42
48/20 - 21/42 is 19/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 42 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
48/20 = 48 × 21/20 × 21 = 1008/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
21/42 = 21 × 10/42 × 10 = 210/420 - Subtract the two like fractions:
1008/420 - 210/420 = 1008 - 210/420 = 798/420 - After reducing the fraction, the answer is 19/10
- In mixed form: 19/10
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