Add 40/70 and 3/81
40/70 + 3/81 is 115/189.
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,
40/70 = 40 × 81/70 × 81 = 3240/5670 - Likewise, for the 2nd fraction, since 81 × 70 = 5670,
3/81 = 3 × 70/81 × 70 = 210/5670 - Add the two like fractions:
3240/5670 + 210/5670 = 3240 + 210/5670 = 3450/5670 - 3450/5670 simplified gives 115/189
- So, 40/70 + 3/81 = 115/189
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