Add 21/9 and 80/42
1st number: 2 3/9, 2nd number: 1 38/42
21/9 + 80/42 is 89/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 9 × 14 = 126,
21/9 = 21 × 14/9 × 14 = 294/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
80/42 = 80 × 3/42 × 3 = 240/126 - Add the two like fractions:
294/126 + 240/126 = 294 + 240/126 = 534/126 - 534/126 simplified gives 89/21
- So, 21/9 + 80/42 = 89/21
In mixed form: 45/21
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