Add 80/81 and 9/70
80/81 + 9/70 is 6329/5670.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 70 is 5670
Next, find the equivalent fraction of both fractional numbers with denominator 5670 - For the 1st fraction, since 81 × 70 = 5670,
80/81 = 80 × 70/81 × 70 = 5600/5670 - Likewise, for the 2nd fraction, since 70 × 81 = 5670,
9/70 = 9 × 81/70 × 81 = 729/5670 - Add the two like fractions:
5600/5670 + 729/5670 = 5600 + 729/5670 = 6329/5670 - So, 80/81 + 9/70 = 6329/5670
In mixed form: 1659/5670
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