Add 12/81 and 20/70
12/81 + 20/70 is 82/189.
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,
12/81 = 12 × 70/81 × 70 = 840/5670 - Likewise, for the 2nd fraction, since 70 × 81 = 5670,
20/70 = 20 × 81/70 × 81 = 1620/5670 - Add the two like fractions:
840/5670 + 1620/5670 = 840 + 1620/5670 = 2460/5670 - 2460/5670 simplified gives 82/189
- So, 12/81 + 20/70 = 82/189
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