Subtract 21/72 from 6/4
1st number: 1 2/4, 2nd number: 21/72
6/4 - 21/72 is 29/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 4 × 18 = 72,
6/4 = 6 × 18/4 × 18 = 108/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
21/72 = 21 × 1/72 × 1 = 21/72 - Subtract the two like fractions:
108/72 - 21/72 = 108 - 21/72 = 87/72 - After reducing the fraction, the answer is 29/24
- In mixed form: 15/24
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