Add 28/36 and 36/21
1st number: 28/36, 2nd number: 1 15/21
28/36 + 36/21 is 157/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 21 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
28/36 = 28 × 7/36 × 7 = 196/252 - Likewise, for the 2nd fraction, since 21 × 12 = 252,
36/21 = 36 × 12/21 × 12 = 432/252 - Add the two like fractions:
196/252 + 432/252 = 196 + 432/252 = 628/252 - 628/252 simplified gives 157/63
- So, 28/36 + 36/21 = 157/63
In mixed form: 231/63
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