Add 20/16 and 90/81
1st number: 1 4/16, 2nd number: 1 9/81
20/16 + 90/81 is 85/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 81 is 1296
Next, find the equivalent fraction of both fractional numbers with denominator 1296 - For the 1st fraction, since 16 × 81 = 1296,
20/16 = 20 × 81/16 × 81 = 1620/1296 - Likewise, for the 2nd fraction, since 81 × 16 = 1296,
90/81 = 90 × 16/81 × 16 = 1440/1296 - Add the two like fractions:
1620/1296 + 1440/1296 = 1620 + 1440/1296 = 3060/1296 - 3060/1296 simplified gives 85/36
- So, 20/16 + 90/81 = 85/36
In mixed form: 213/36
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