Add 18/81 and 90/16
1st number: 18/81, 2nd number: 5 10/16
18/81 + 90/16 is 421/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 16 is 1296
Next, find the equivalent fraction of both fractional numbers with denominator 1296 - For the 1st fraction, since 81 × 16 = 1296,
18/81 = 18 × 16/81 × 16 = 288/1296 - Likewise, for the 2nd fraction, since 16 × 81 = 1296,
90/16 = 90 × 81/16 × 81 = 7290/1296 - Add the two like fractions:
288/1296 + 7290/1296 = 288 + 7290/1296 = 7578/1296 - 7578/1296 simplified gives 421/72
- So, 18/81 + 90/16 = 421/72
In mixed form: 561/72
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