Add 6/40 and 70/81
6/40 + 70/81 is 1643/1620.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 81 is 3240
Next, find the equivalent fraction of both fractional numbers with denominator 3240 - For the 1st fraction, since 40 × 81 = 3240,
6/40 = 6 × 81/40 × 81 = 486/3240 - Likewise, for the 2nd fraction, since 81 × 40 = 3240,
70/81 = 70 × 40/81 × 40 = 2800/3240 - Add the two like fractions:
486/3240 + 2800/3240 = 486 + 2800/3240 = 3286/3240 - 3286/3240 simplified gives 1643/1620
- So, 6/40 + 70/81 = 1643/1620
In mixed form: 123/1620
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