Add 3/9 and 40/84
3/9 + 40/84 is 17/21.
Steps for adding 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,
3/9 = 3 × 28/9 × 28 = 84/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
40/84 = 40 × 3/84 × 3 = 120/252 - Add the two like fractions:
84/252 + 120/252 = 84 + 120/252 = 204/252 - 204/252 simplified gives 17/21
- So, 3/9 + 40/84 = 17/21
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