Subtract 72/28 from 20/3
1st number: 6 2/3, 2nd number: 2 16/28
20/3 - 72/28 is 86/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 3 × 28 = 84,
20/3 = 20 × 28/3 × 28 = 560/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
72/28 = 72 × 3/28 × 3 = 216/84 - Subtract the two like fractions:
560/84 - 216/84 = 560 - 216/84 = 344/84 - After reducing the fraction, the answer is 86/21
- In mixed form: 42/21
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