Subtract 20/84 from 15/9
1st number: 1 6/9, 2nd number: 20/84
15/9 - 20/84 is 10/7.
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,
15/9 = 15 × 28/9 × 28 = 420/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
20/84 = 20 × 3/84 × 3 = 60/252 - Subtract the two like fractions:
420/252 - 60/252 = 420 - 60/252 = 360/252 - After reducing the fraction, the answer is 10/7
- In mixed form: 13/7
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