Add 42/27 and 80/90
1st number: 1 15/27, 2nd number: 80/90
42/27 + 80/90 is 22/9.
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,
80/90 = 80 × 3/90 × 3 = 240/270 - Add the two like fractions:
420/270 + 240/270 = 420 + 240/270 = 660/270 - 660/270 simplified gives 22/9
- So, 42/27 + 80/90 = 22/9
In mixed form: 24/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/27+80/90 42/54+80/90 42/81+80/90