Add 84/7 and 30/20
1st number: 12 0/7, 2nd number: 1 10/20
84/7 + 30/20 is 27/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 7 × 20 = 140,
84/7 = 84 × 20/7 × 20 = 1680/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
30/20 = 30 × 7/20 × 7 = 210/140 - Add the two like fractions:
1680/140 + 210/140 = 1680 + 210/140 = 1890/140 - 1890/140 simplified gives 27/2
- So, 84/7 + 30/20 = 27/2
In mixed form: 131/2
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