Add 21/84 and 45/36
1st number: 21/84, 2nd number: 1 9/36
21/84 + 45/36 is 3/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
21/84 = 21 × 3/84 × 3 = 63/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
45/36 = 45 × 7/36 × 7 = 315/252 - Add the two like fractions:
63/252 + 315/252 = 63 + 315/252 = 378/252 - 378/252 simplified gives 3/2
- So, 21/84 + 45/36 = 3/2
In mixed form: 11/2
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