Add 18/20 and 9/12
18/20 + 9/12 is 33/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
18/20 = 18 × 3/20 × 3 = 54/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
9/12 = 9 × 5/12 × 5 = 45/60 - Add the two like fractions:
54/60 + 45/60 = 54 + 45/60 = 99/60 - 99/60 simplified gives 33/20
- So, 18/20 + 9/12 = 33/20
In mixed form: 113/20
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