Add 30/18 and 21/36
1st number: 1 12/18, 2nd number: 21/36
30/18 + 21/36 is 9/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
30/18 = 30 × 2/18 × 2 = 60/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
21/36 = 21 × 1/36 × 1 = 21/36 - Add the two like fractions:
60/36 + 21/36 = 60 + 21/36 = 81/36 - 81/36 simplified gives 9/4
- So, 30/18 + 21/36 = 9/4
In mixed form: 21/4
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