Add 36/20 and 45/21
1st number: 1 16/20, 2nd number: 2 3/21
36/20 + 45/21 is 138/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 21 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
36/20 = 36 × 21/20 × 21 = 756/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
45/21 = 45 × 20/21 × 20 = 900/420 - Add the two like fractions:
756/420 + 900/420 = 756 + 900/420 = 1656/420 - 1656/420 simplified gives 138/35
- So, 36/20 + 45/21 = 138/35
In mixed form: 333/35
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