Subtract 21/5 from 12/3
1st number: 4 0/3, 2nd number: 4 1/5
12/3 - 21/5 is -1/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 5 is 15
Next, find the equivalent fraction of both fractional numbers with denominator 15 - For the 1st fraction, since 3 × 5 = 15,
12/3 = 12 × 5/3 × 5 = 60/15 - Likewise, for the 2nd fraction, since 5 × 3 = 15,
21/5 = 21 × 3/5 × 3 = 63/15 - Subtract the two like fractions:
60/15 - 63/15 = 60 - 63/15 = -3/15 - After reducing the fraction, the answer is -1/5
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