Add 81/90 and 42/54
81/90 + 42/54 is 151/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 90 × 3 = 270,
81/90 = 81 × 3/90 × 3 = 243/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
42/54 = 42 × 5/54 × 5 = 210/270 - Add the two like fractions:
243/270 + 210/270 = 243 + 210/270 = 453/270 - 453/270 simplified gives 151/90
- So, 81/90 + 42/54 = 151/90
In mixed form: 161/90
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