Add 81/18 and 70/45
1st number: 4 9/18, 2nd number: 1 25/45
81/18 + 70/45 is 109/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
81/18 = 81 × 5/18 × 5 = 405/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
70/45 = 70 × 2/45 × 2 = 140/90 - Add the two like fractions:
405/90 + 140/90 = 405 + 140/90 = 545/90 - 545/90 simplified gives 109/18
- So, 81/18 + 70/45 = 109/18
In mixed form: 61/18
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