Add 12/18 and 21/7
1st number: 12/18, 2nd number: 3 0/7
12/18 + 21/7 is 11/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 7 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
12/18 = 12 × 7/18 × 7 = 84/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
21/7 = 21 × 18/7 × 18 = 378/126 - Add the two like fractions:
84/126 + 378/126 = 84 + 378/126 = 462/126 - 462/126 simplified gives 11/3
- So, 12/18 + 21/7 = 11/3
In mixed form: 32/3
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