Subtract 21/5 from 42/4
1st number: 10 2/4, 2nd number: 4 1/5
42/4 - 21/5 is 63/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 5 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
42/4 = 42 × 5/4 × 5 = 210/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
21/5 = 21 × 4/5 × 4 = 84/20 - Subtract the two like fractions:
210/20 - 84/20 = 210 - 84/20 = 126/20 - After reducing the fraction, the answer is 63/10
- In mixed form: 63/10
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