Add 21/9 and 90/84
1st number: 2 3/9, 2nd number: 1 6/84
21/9 + 90/84 is 143/42.
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,
21/9 = 21 × 28/9 × 28 = 588/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
90/84 = 90 × 3/84 × 3 = 270/252 - Add the two like fractions:
588/252 + 270/252 = 588 + 270/252 = 858/252 - 858/252 simplified gives 143/42
- So, 21/9 + 90/84 = 143/42
In mixed form: 317/42
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