Add 20/84 and 54/18
1st number: 20/84, 2nd number: 3 0/18
20/84 + 54/18 is 68/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
20/84 = 20 × 3/84 × 3 = 60/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
54/18 = 54 × 14/18 × 14 = 756/252 - Add the two like fractions:
60/252 + 756/252 = 60 + 756/252 = 816/252 - 816/252 simplified gives 68/21
- So, 20/84 + 54/18 = 68/21
In mixed form: 35/21
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