Subtract 42/20 from 21/3
1st number: 7 0/3, 2nd number: 2 2/20
21/3 - 42/20 is 49/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 3 × 20 = 60,
21/3 = 21 × 20/3 × 20 = 420/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
42/20 = 42 × 3/20 × 3 = 126/60 - Subtract the two like fractions:
420/60 - 126/60 = 420 - 126/60 = 294/60 - After reducing the fraction, the answer is 49/10
- In mixed form: 49/10
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