Add 30/7 and 30/20
1st number: 4 2/7, 2nd number: 1 10/20
30/7 + 30/20 is 81/14.
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,
30/7 = 30 × 20/7 × 20 = 600/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
30/20 = 30 × 7/20 × 7 = 210/140 - Add the two like fractions:
600/140 + 210/140 = 600 + 210/140 = 810/140 - 810/140 simplified gives 81/14
- So, 30/7 + 30/20 = 81/14
In mixed form: 511/14
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