Add 9/20 and 21/18
1st number: 9/20, 2nd number: 1 3/18
9/20 + 21/18 is 97/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
9/20 = 9 × 9/20 × 9 = 81/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
21/18 = 21 × 10/18 × 10 = 210/180 - Add the two like fractions:
81/180 + 210/180 = 81 + 210/180 = 291/180 - 291/180 simplified gives 97/60
- So, 9/20 + 21/18 = 97/60
In mixed form: 137/60
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