Add 7/70 and 80/81
7/70 + 80/81 is 881/810.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 81 is 5670
Next, find the equivalent fraction of both fractional numbers with denominator 5670 - For the 1st fraction, since 70 × 81 = 5670,
7/70 = 7 × 81/70 × 81 = 567/5670 - Likewise, for the 2nd fraction, since 81 × 70 = 5670,
80/81 = 80 × 70/81 × 70 = 5600/5670 - Add the two like fractions:
567/5670 + 5600/5670 = 567 + 5600/5670 = 6167/5670 - 6167/5670 simplified gives 881/810
- So, 7/70 + 80/81 = 881/810
In mixed form: 171/810
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