Add 81/90 and 32/20
1st number: 81/90, 2nd number: 1 12/20
81/90 + 32/20 is 5/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
81/90 = 81 × 2/90 × 2 = 162/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
32/20 = 32 × 9/20 × 9 = 288/180 - Add the two like fractions:
162/180 + 288/180 = 162 + 288/180 = 450/180 - 450/180 simplified gives 5/2
- So, 81/90 + 32/20 = 5/2
In mixed form: 21/2
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