Add 12/18 and 21/36
12/18 + 21/36 is 5/4.
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,
12/18 = 12 × 2/18 × 2 = 24/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
21/36 = 21 × 1/36 × 1 = 21/36 - Add the two like fractions:
24/36 + 21/36 = 24 + 21/36 = 45/36 - 45/36 simplified gives 5/4
- So, 12/18 + 21/36 = 5/4
In mixed form: 11/4
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