Add 20/81 and 4/70
20/81 + 4/70 is 862/2835.
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,
4/70 = 4 × 81/70 × 81 = 324/5670 - Add the two like fractions:
1400/5670 + 324/5670 = 1400 + 324/5670 = 1724/5670 - 1724/5670 simplified gives 862/2835
- So, 20/81 + 4/70 = 862/2835
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