Add 12/5 and 21/18
1st number: 2 2/5, 2nd number: 1 3/18
12/5 + 21/18 is 107/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 5 × 18 = 90,
12/5 = 12 × 18/5 × 18 = 216/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
21/18 = 21 × 5/18 × 5 = 105/90 - Add the two like fractions:
216/90 + 105/90 = 216 + 105/90 = 321/90 - 321/90 simplified gives 107/30
- So, 12/5 + 21/18 = 107/30
In mixed form: 317/30
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