Subtract 21/24 from 45/18
1st number: 2 9/18, 2nd number: 21/24
45/18 - 21/24 is 13/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 24 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
45/18 = 45 × 4/18 × 4 = 180/72 - Likewise, for the 2nd fraction, since 24 × 3 = 72,
21/24 = 21 × 3/24 × 3 = 63/72 - Subtract the two like fractions:
180/72 - 63/72 = 180 - 63/72 = 117/72 - After reducing the fraction, the answer is 13/8
- In mixed form: 15/8
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