Add 90/40 and 20/81
1st number: 2 10/40, 2nd number: 20/81
90/40 + 20/81 is 809/324.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 81 is 3240
Next, find the equivalent fraction of both fractional numbers with denominator 3240 - For the 1st fraction, since 40 × 81 = 3240,
90/40 = 90 × 81/40 × 81 = 7290/3240 - Likewise, for the 2nd fraction, since 81 × 40 = 3240,
20/81 = 20 × 40/81 × 40 = 800/3240 - Add the two like fractions:
7290/3240 + 800/3240 = 7290 + 800/3240 = 8090/3240 - 8090/3240 simplified gives 809/324
- So, 90/40 + 20/81 = 809/324
In mixed form: 2161/324
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