Add 81/90 and 5/45
81/90 + 5/45 is 91/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
81/90 = 81 × 1/90 × 1 = 81/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
5/45 = 5 × 2/45 × 2 = 10/90 - Add the two like fractions:
81/90 + 10/90 = 81 + 10/90 = 91/90 - So, 81/90 + 5/45 = 91/90
In mixed form: 11/90
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