Add 21/36 and 18/27
21/36 + 18/27 is 5/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 27 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 36 × 3 = 108,
21/36 = 21 × 3/36 × 3 = 63/108 - Likewise, for the 2nd fraction, since 27 × 4 = 108,
18/27 = 18 × 4/27 × 4 = 72/108 - Add the two like fractions:
63/108 + 72/108 = 63 + 72/108 = 135/108 - 135/108 simplified gives 5/4
- So, 21/36 + 18/27 = 5/4
In mixed form: 11/4
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