Add 45/4 and 81/90
1st number: 11 1/4, 2nd number: 81/90
45/4 + 81/90 is 243/20.
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,
45/4 = 45 × 45/4 × 45 = 2025/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
81/90 = 81 × 2/90 × 2 = 162/180 - Add the two like fractions:
2025/180 + 162/180 = 2025 + 162/180 = 2187/180 - 2187/180 simplified gives 243/20
- So, 45/4 + 81/90 = 243/20
In mixed form: 123/20
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