Subtract 20/18 from 84/28
1st number: 3 0/28, 2nd number: 1 2/18
84/28 - 20/18 is 17/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
84/28 = 84 × 9/28 × 9 = 756/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
20/18 = 20 × 14/18 × 14 = 280/252 - Subtract the two like fractions:
756/252 - 280/252 = 756 - 280/252 = 476/252 - After reducing the fraction, the answer is 17/9
- In mixed form: 18/9
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