Subtract 40/84 from 15/9
1st number: 1 6/9, 2nd number: 40/84
15/9 - 40/84 is 25/21.
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,
15/9 = 15 × 28/9 × 28 = 420/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
40/84 = 40 × 3/84 × 3 = 120/252 - Subtract the two like fractions:
420/252 - 120/252 = 420 - 120/252 = 300/252 - After reducing the fraction, the answer is 25/21
- In mixed form: 14/21
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