Add 72/81 and 20/35
72/81 + 20/35 is 92/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 35 is 2835
Next, find the equivalent fraction of both fractional numbers with denominator 2835 - For the 1st fraction, since 81 × 35 = 2835,
72/81 = 72 × 35/81 × 35 = 2520/2835 - Likewise, for the 2nd fraction, since 35 × 81 = 2835,
20/35 = 20 × 81/35 × 81 = 1620/2835 - Add the two like fractions:
2520/2835 + 1620/2835 = 2520 + 1620/2835 = 4140/2835 - 4140/2835 simplified gives 92/63
- So, 72/81 + 20/35 = 92/63
In mixed form: 129/63
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