Add 21/35 and 30/81
21/35 + 30/81 is 131/135.
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,
21/35 = 21 × 81/35 × 81 = 1701/2835 - Likewise, for the 2nd fraction, since 81 × 35 = 2835,
30/81 = 30 × 35/81 × 35 = 1050/2835 - Add the two like fractions:
1701/2835 + 1050/2835 = 1701 + 1050/2835 = 2751/2835 - 2751/2835 simplified gives 131/135
- So, 21/35 + 30/81 = 131/135
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