Add 20/30 and 81/90
20/30 + 81/90 is 47/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
20/30 = 20 × 3/30 × 3 = 60/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
81/90 = 81 × 1/90 × 1 = 81/90 - Add the two like fractions:
60/90 + 81/90 = 60 + 81/90 = 141/90 - 141/90 simplified gives 47/30
- So, 20/30 + 81/90 = 47/30
In mixed form: 117/30
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