Add 21/15 and 84/36
1st number: 1 6/15, 2nd number: 2 12/36
21/15 + 84/36 is 56/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 15 × 12 = 180,
21/15 = 21 × 12/15 × 12 = 252/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
84/36 = 84 × 5/36 × 5 = 420/180 - Add the two like fractions:
252/180 + 420/180 = 252 + 420/180 = 672/180 - 672/180 simplified gives 56/15
- So, 21/15 + 84/36 = 56/15
In mixed form: 311/15
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