Add 20/12 and 9/7
1st number: 1 8/12, 2nd number: 1 2/7
20/12 + 9/7 is 62/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
20/12 = 20 × 7/12 × 7 = 140/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
9/7 = 9 × 12/7 × 12 = 108/84 - Add the two like fractions:
140/84 + 108/84 = 140 + 108/84 = 248/84 - 248/84 simplified gives 62/21
- So, 20/12 + 9/7 = 62/21
In mixed form: 220/21
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