Add 70/5 and 90/81
1st number: 14 0/5, 2nd number: 1 9/81
70/5 + 90/81 is 136/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 5 × 81 = 405,
70/5 = 70 × 81/5 × 81 = 5670/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
90/81 = 90 × 5/81 × 5 = 450/405 - Add the two like fractions:
5670/405 + 450/405 = 5670 + 450/405 = 6120/405 - 6120/405 simplified gives 136/9
- So, 70/5 + 90/81 = 136/9
In mixed form: 151/9
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