Subtract 21/12 from 45/2
1st number: 22 1/2, 2nd number: 1 9/12
45/2 - 21/12 is 83/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 2 × 6 = 12,
45/2 = 45 × 6/2 × 6 = 270/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
21/12 = 21 × 1/12 × 1 = 21/12 - Subtract the two like fractions:
270/12 - 21/12 = 270 - 21/12 = 249/12 - After reducing the fraction, the answer is 83/4
- In mixed form: 203/4
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