Add 18/20 and 21/3
1st number: 18/20, 2nd number: 7 0/3
18/20 + 21/3 is 79/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 3 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 3 × 20 = 60,
21/3 = 21 × 20/3 × 20 = 420/60 - Add the two like fractions:
54/60 + 420/60 = 54 + 420/60 = 474/60 - 474/60 simplified gives 79/10
- So, 18/20 + 21/3 = 79/10
In mixed form: 79/10
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