Add 81/27 and 42/90
1st number: 3 0/27, 2nd number: 42/90
81/27 + 42/90 is 52/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 90 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 27 × 10 = 270,
81/27 = 81 × 10/27 × 10 = 810/270 - Likewise, for the 2nd fraction, since 90 × 3 = 270,
42/90 = 42 × 3/90 × 3 = 126/270 - Add the two like fractions:
810/270 + 126/270 = 810 + 126/270 = 936/270 - 936/270 simplified gives 52/15
- So, 81/27 + 42/90 = 52/15
In mixed form: 37/15
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