Subtract 20/8 from 72/12
1st number: 6 0/12, 2nd number: 2 4/8
72/12 - 20/8 is 7/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 8 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 12 × 2 = 24,
72/12 = 72 × 2/12 × 2 = 144/24 - Likewise, for the 2nd fraction, since 8 × 3 = 24,
20/8 = 20 × 3/8 × 3 = 60/24 - Subtract the two like fractions:
144/24 - 60/24 = 144 - 60/24 = 84/24 - After reducing the fraction, the answer is 7/2
- In mixed form: 31/2
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