Add 21/81 and 10/70
21/81 + 10/70 is 76/189.
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,
21/81 = 21 × 70/81 × 70 = 1470/5670 - Likewise, for the 2nd fraction, since 70 × 81 = 5670,
10/70 = 10 × 81/70 × 81 = 810/5670 - Add the two like fractions:
1470/5670 + 810/5670 = 1470 + 810/5670 = 2280/5670 - 2280/5670 simplified gives 76/189
- So, 21/81 + 10/70 = 76/189
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