Subtract 12/24 from 90/21
1st number: 4 6/21, 2nd number: 12/24
90/21 - 12/24 is 53/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
90/21 = 90 × 8/21 × 8 = 720/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
12/24 = 12 × 7/24 × 7 = 84/168 - Subtract the two like fractions:
720/168 - 84/168 = 720 - 84/168 = 636/168 - After reducing the fraction, the answer is 53/14
- In mixed form: 311/14
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