Add 12/42 and 21/9
1st number: 12/42, 2nd number: 2 3/9
12/42 + 21/9 is 55/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 9 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
12/42 = 12 × 3/42 × 3 = 36/126 - Likewise, for the 2nd fraction, since 9 × 14 = 126,
21/9 = 21 × 14/9 × 14 = 294/126 - Add the two like fractions:
36/126 + 294/126 = 36 + 294/126 = 330/126 - 330/126 simplified gives 55/21
- So, 12/42 + 21/9 = 55/21
In mixed form: 213/21
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