Add 70/45 and 18/81
1st number: 1 25/45, 2nd number: 18/81
70/45 + 18/81 is 16/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 45 × 9 = 405,
70/45 = 70 × 9/45 × 9 = 630/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
18/81 = 18 × 5/81 × 5 = 90/405 - Add the two like fractions:
630/405 + 90/405 = 630 + 90/405 = 720/405 - 720/405 simplified gives 16/9
- So, 70/45 + 18/81 = 16/9
In mixed form: 17/9
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