Add 20/35 and 45/81
20/35 + 45/81 is 71/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 81 is 2835
Next, find the equivalent fraction of both fractional numbers with denominator 2835 - For the 1st fraction, since 35 × 81 = 2835,
20/35 = 20 × 81/35 × 81 = 1620/2835 - Likewise, for the 2nd fraction, since 81 × 35 = 2835,
45/81 = 45 × 35/81 × 35 = 1575/2835 - Add the two like fractions:
1620/2835 + 1575/2835 = 1620 + 1575/2835 = 3195/2835 - 3195/2835 simplified gives 71/63
- So, 20/35 + 45/81 = 71/63
In mixed form: 18/63
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