Add 28/70 and 70/81
28/70 + 70/81 is 512/405.
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,
28/70 = 28 × 81/70 × 81 = 2268/5670 - Likewise, for the 2nd fraction, since 81 × 70 = 5670,
70/81 = 70 × 70/81 × 70 = 4900/5670 - Add the two like fractions:
2268/5670 + 4900/5670 = 2268 + 4900/5670 = 7168/5670 - 7168/5670 simplified gives 512/405
- So, 28/70 + 70/81 = 512/405
In mixed form: 1107/405
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