Add 70/45 and 4/81
1st number: 1 25/45, 2nd number: 4/81
70/45 + 4/81 is 130/81.
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,
4/81 = 4 × 5/81 × 5 = 20/405 - Add the two like fractions:
630/405 + 20/405 = 630 + 20/405 = 650/405 - 650/405 simplified gives 130/81
- So, 70/45 + 4/81 = 130/81
In mixed form: 149/81
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