Subtract 42/30 from 21/3
1st number: 7 0/3, 2nd number: 1 12/30
21/3 - 42/30 is 28/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 3 × 10 = 30,
21/3 = 21 × 10/3 × 10 = 210/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
42/30 = 42 × 1/30 × 1 = 42/30 - Subtract the two like fractions:
210/30 - 42/30 = 210 - 42/30 = 168/30 - After reducing the fraction, the answer is 28/5
- In mixed form: 53/5
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