Subtract 21/3 from 84/10
1st number: 8 4/10, 2nd number: 7 0/3
84/10 - 21/3 is 7/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 3 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
84/10 = 84 × 3/10 × 3 = 252/30 - Likewise, for the 2nd fraction, since 3 × 10 = 30,
21/3 = 21 × 10/3 × 10 = 210/30 - Subtract the two like fractions:
252/30 - 210/30 = 252 - 210/30 = 42/30 - After reducing the fraction, the answer is 7/5
- In mixed form: 12/5
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