Add 42/27 and 20/90
1st number: 1 15/27, 2nd number: 20/90
42/27 + 20/90 is 16/9.
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,
42/27 = 42 × 10/27 × 10 = 420/270 - Likewise, for the 2nd fraction, since 90 × 3 = 270,
20/90 = 20 × 3/90 × 3 = 60/270 - Add the two like fractions:
420/270 + 60/270 = 420 + 60/270 = 480/270 - 480/270 simplified gives 16/9
- So, 42/27 + 20/90 = 16/9
In mixed form: 17/9
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