Add 42/81 and 18/90
42/81 + 18/90 is 97/135.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 90 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 81 × 10 = 810,
42/81 = 42 × 10/81 × 10 = 420/810 - Likewise, for the 2nd fraction, since 90 × 9 = 810,
18/90 = 18 × 9/90 × 9 = 162/810 - Add the two like fractions:
420/810 + 162/810 = 420 + 162/810 = 582/810 - 582/810 simplified gives 97/135
- So, 42/81 + 18/90 = 97/135
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