Add 81/20 and 8/90
1st number: 4 1/20, 2nd number: 8/90
81/20 + 8/90 is 149/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
81/20 = 81 × 9/20 × 9 = 729/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
8/90 = 8 × 2/90 × 2 = 16/180 - Add the two like fractions:
729/180 + 16/180 = 729 + 16/180 = 745/180 - 745/180 simplified gives 149/36
- So, 81/20 + 8/90 = 149/36
In mixed form: 45/36
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