Add 20/7 and 84/18
1st number: 2 6/7, 2nd number: 4 12/18
20/7 + 84/18 is 158/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 7 × 18 = 126,
20/7 = 20 × 18/7 × 18 = 360/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
84/18 = 84 × 7/18 × 7 = 588/126 - Add the two like fractions:
360/126 + 588/126 = 360 + 588/126 = 948/126 - 948/126 simplified gives 158/21
- So, 20/7 + 84/18 = 158/21
In mixed form: 711/21
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