Add 72/81 and 9/70
72/81 + 9/70 is 641/630.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 70 is 5670
Next, find the equivalent fraction of both fractional numbers with denominator 5670 - For the 1st fraction, since 81 × 70 = 5670,
72/81 = 72 × 70/81 × 70 = 5040/5670 - Likewise, for the 2nd fraction, since 70 × 81 = 5670,
9/70 = 9 × 81/70 × 81 = 729/5670 - Add the two like fractions:
5040/5670 + 729/5670 = 5040 + 729/5670 = 5769/5670 - 5769/5670 simplified gives 641/630
- So, 72/81 + 9/70 = 641/630
In mixed form: 111/630
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