Add 81/90 and 42/36
1st number: 81/90, 2nd number: 1 6/36
81/90 + 42/36 is 31/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
81/90 = 81 × 2/90 × 2 = 162/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
42/36 = 42 × 5/36 × 5 = 210/180 - Add the two like fractions:
162/180 + 210/180 = 162 + 210/180 = 372/180 - 372/180 simplified gives 31/15
- So, 81/90 + 42/36 = 31/15
In mixed form: 21/15
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