Add 20/2 and 30/21
1st number: 10 0/2, 2nd number: 1 9/21
20/2 + 30/21 is 80/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
20/2 = 20 × 21/2 × 21 = 420/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
30/21 = 30 × 2/21 × 2 = 60/42 - Add the two like fractions:
420/42 + 60/42 = 420 + 60/42 = 480/42 - 480/42 simplified gives 80/7
- So, 20/2 + 30/21 = 80/7
In mixed form: 113/7
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