Add 90/48 and 20/81
1st number: 1 42/48, 2nd number: 20/81
90/48 + 20/81 is 1375/648.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 81 is 1296
Next, find the equivalent fraction of both fractional numbers with denominator 1296 - For the 1st fraction, since 48 × 27 = 1296,
90/48 = 90 × 27/48 × 27 = 2430/1296 - Likewise, for the 2nd fraction, since 81 × 16 = 1296,
20/81 = 20 × 16/81 × 16 = 320/1296 - Add the two like fractions:
2430/1296 + 320/1296 = 2430 + 320/1296 = 2750/1296 - 2750/1296 simplified gives 1375/648
- So, 90/48 + 20/81 = 1375/648
In mixed form: 279/648
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