Add 70/81 and 21/49
70/81 + 21/49 is 733/567.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 49 is 3969
Next, find the equivalent fraction of both fractional numbers with denominator 3969 - For the 1st fraction, since 81 × 49 = 3969,
70/81 = 70 × 49/81 × 49 = 3430/3969 - Likewise, for the 2nd fraction, since 49 × 81 = 3969,
21/49 = 21 × 81/49 × 81 = 1701/3969 - Add the two like fractions:
3430/3969 + 1701/3969 = 3430 + 1701/3969 = 5131/3969 - 5131/3969 simplified gives 733/567
- So, 70/81 + 21/49 = 733/567
In mixed form: 1166/567
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