Add 21/36 and 84/18
1st number: 21/36, 2nd number: 4 12/18
21/36 + 84/18 is 21/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 36 × 1 = 36,
21/36 = 21 × 1/36 × 1 = 21/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
84/18 = 84 × 2/18 × 2 = 168/36 - Add the two like fractions:
21/36 + 168/36 = 21 + 168/36 = 189/36 - 189/36 simplified gives 21/4
- So, 21/36 + 84/18 = 21/4
In mixed form: 51/4
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