Add 18/35 and 21/81
18/35 + 21/81 is 731/945.
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,
18/35 = 18 × 81/35 × 81 = 1458/2835 - Likewise, for the 2nd fraction, since 81 × 35 = 2835,
21/81 = 21 × 35/81 × 35 = 735/2835 - Add the two like fractions:
1458/2835 + 735/2835 = 1458 + 735/2835 = 2193/2835 - 2193/2835 simplified gives 731/945
- So, 18/35 + 21/81 = 731/945
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