Add 90/70 and 36/81
1st number: 1 20/70, 2nd number: 36/81
90/70 + 36/81 is 109/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 81 is 5670
Next, find the equivalent fraction of both fractional numbers with denominator 5670 - For the 1st fraction, since 70 × 81 = 5670,
90/70 = 90 × 81/70 × 81 = 7290/5670 - Likewise, for the 2nd fraction, since 81 × 70 = 5670,
36/81 = 36 × 70/81 × 70 = 2520/5670 - Add the two like fractions:
7290/5670 + 2520/5670 = 7290 + 2520/5670 = 9810/5670 - 9810/5670 simplified gives 109/63
- So, 90/70 + 36/81 = 109/63
In mixed form: 146/63
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