Add 28/20 and 21/30
1st number: 1 8/20, 2nd number: 21/30
28/20 + 21/30 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
28/20 = 28 × 3/20 × 3 = 84/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
21/30 = 21 × 2/30 × 2 = 42/60 - Add the two like fractions:
84/60 + 42/60 = 84 + 42/60 = 126/60 - 126/60 simplified gives 21/10
- So, 28/20 + 21/30 = 21/10
In mixed form: 21/10
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