Add 9/4 and 81/90
1st number: 2 1/4, 2nd number: 81/90
9/4 + 81/90 is 63/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
9/4 = 9 × 45/4 × 45 = 405/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
81/90 = 81 × 2/90 × 2 = 162/180 - Add the two like fractions:
405/180 + 162/180 = 405 + 162/180 = 567/180 - 567/180 simplified gives 63/20
- So, 9/4 + 81/90 = 63/20
In mixed form: 33/20
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