Add 21/30 and 80/20
1st number: 21/30, 2nd number: 4 0/20
21/30 + 80/20 is 47/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
21/30 = 21 × 2/30 × 2 = 42/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
80/20 = 80 × 3/20 × 3 = 240/60 - Add the two like fractions:
42/60 + 240/60 = 42 + 240/60 = 282/60 - 282/60 simplified gives 47/10
- So, 21/30 + 80/20 = 47/10
In mixed form: 47/10
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