Add 20/9 and 84/21
1st number: 2 2/9, 2nd number: 4 0/21
20/9 + 84/21 is 56/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
20/9 = 20 × 7/9 × 7 = 140/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
84/21 = 84 × 3/21 × 3 = 252/63 - Add the two like fractions:
140/63 + 252/63 = 140 + 252/63 = 392/63 - 392/63 simplified gives 56/9
- So, 20/9 + 84/21 = 56/9
In mixed form: 62/9
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