Add 30/3 and 30/21
1st number: 10 0/3, 2nd number: 1 9/21
30/3 + 30/21 is 80/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
30/3 = 30 × 7/3 × 7 = 210/21 - Likewise, for the 2nd fraction, since 21 × 1 = 21,
30/21 = 30 × 1/21 × 1 = 30/21 - Add the two like fractions:
210/21 + 30/21 = 210 + 30/21 = 240/21 - 240/21 simplified gives 80/7
- So, 30/3 + 30/21 = 80/7
In mixed form: 113/7
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