Add 12/21 and 30/18
1st number: 12/21, 2nd number: 1 12/18
12/21 + 30/18 is 47/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 21 × 6 = 126,
12/21 = 12 × 6/21 × 6 = 72/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
30/18 = 30 × 7/18 × 7 = 210/126 - Add the two like fractions:
72/126 + 210/126 = 72 + 210/126 = 282/126 - 282/126 simplified gives 47/21
- So, 12/21 + 30/18 = 47/21
In mixed form: 25/21
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