Add 20/81 and 35/70
20/81 + 35/70 is 121/162.
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,
20/81 = 20 × 70/81 × 70 = 1400/5670 - Likewise, for the 2nd fraction, since 70 × 81 = 5670,
35/70 = 35 × 81/70 × 81 = 2835/5670 - Add the two like fractions:
1400/5670 + 2835/5670 = 1400 + 2835/5670 = 4235/5670 - 4235/5670 simplified gives 121/162
- So, 20/81 + 35/70 = 121/162
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