Subtract 21/15 from 84/24
1st number: 3 12/24, 2nd number: 1 6/15
84/24 - 21/15 is 21/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
84/24 = 84 × 5/24 × 5 = 420/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
21/15 = 21 × 8/15 × 8 = 168/120 - Subtract the two like fractions:
420/120 - 168/120 = 420 - 168/120 = 252/120 - After reducing the fraction, the answer is 21/10
- In mixed form: 21/10
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