Add 20/84 and 9/7
1st number: 20/84, 2nd number: 1 2/7
20/84 + 9/7 is 32/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
20/84 = 20 × 1/84 × 1 = 20/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
9/7 = 9 × 12/7 × 12 = 108/84 - Add the two like fractions:
20/84 + 108/84 = 20 + 108/84 = 128/84 - 128/84 simplified gives 32/21
- So, 20/84 + 9/7 = 32/21
In mixed form: 111/21
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