Add 45/36 and 20/21
1st number: 1 9/36, 2nd number: 20/21
45/36 + 20/21 is 185/84.
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,
45/36 = 45 × 7/36 × 7 = 315/252 - Likewise, for the 2nd fraction, since 21 × 12 = 252,
20/21 = 20 × 12/21 × 12 = 240/252 - Add the two like fractions:
315/252 + 240/252 = 315 + 240/252 = 555/252 - 555/252 simplified gives 185/84
- So, 45/36 + 20/21 = 185/84
In mixed form: 217/84
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