Add 70/12 and 90/81
1st number: 5 10/12, 2nd number: 1 9/81
70/12 + 90/81 is 125/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 12 × 27 = 324,
70/12 = 70 × 27/12 × 27 = 1890/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
90/81 = 90 × 4/81 × 4 = 360/324 - Add the two like fractions:
1890/324 + 360/324 = 1890 + 360/324 = 2250/324 - 2250/324 simplified gives 125/18
- So, 70/12 + 90/81 = 125/18
In mixed form: 617/18
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