Add 21/18 and 12/20
1st number: 1 3/18, 2nd number: 12/20
21/18 + 12/20 is 53/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
21/18 = 21 × 10/18 × 10 = 210/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
12/20 = 12 × 9/20 × 9 = 108/180 - Add the two like fractions:
210/180 + 108/180 = 210 + 108/180 = 318/180 - 318/180 simplified gives 53/30
- So, 21/18 + 12/20 = 53/30
In mixed form: 123/30
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