Add 81/20 and 9/90
1st number: 4 1/20, 2nd number: 9/90
81/20 + 9/90 is 83/20.
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,
9/90 = 9 × 2/90 × 2 = 18/180 - Add the two like fractions:
729/180 + 18/180 = 729 + 18/180 = 747/180 - 747/180 simplified gives 83/20
- So, 81/20 + 9/90 = 83/20
In mixed form: 43/20
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