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