Subtract 20/84 from 45/9
1st number: 5 0/9, 2nd number: 20/84
45/9 - 20/84 is 100/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 9 × 28 = 252,
45/9 = 45 × 28/9 × 28 = 1260/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
20/84 = 20 × 3/84 × 3 = 60/252 - Subtract the two like fractions:
1260/252 - 60/252 = 1260 - 60/252 = 1200/252 - After reducing the fraction, the answer is 100/21
- In mixed form: 416/21
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