Add 84/7 and 84/20
1st number: 12 0/7, 2nd number: 4 4/20
84/7 + 84/20 is 81/5.
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,
84/20 = 84 × 7/20 × 7 = 588/140 - Add the two like fractions:
1680/140 + 588/140 = 1680 + 588/140 = 2268/140 - 2268/140 simplified gives 81/5
- So, 84/7 + 84/20 = 81/5
In mixed form: 161/5
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