Add 42/9 and 80/10
1st number: 4 6/9, 2nd number: 8 0/10
42/9 + 80/10 is 38/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
42/9 = 42 × 10/9 × 10 = 420/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
80/10 = 80 × 9/10 × 9 = 720/90 - Add the two like fractions:
420/90 + 720/90 = 420 + 720/90 = 1140/90 - 1140/90 simplified gives 38/3
- So, 42/9 + 80/10 = 38/3
In mixed form: 122/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/9+80/10 42/18+80/10 42/9+80/20 42/27+80/10 42/9+80/30 42/45+80/10 42/9+80/50 42/63+80/10 42/9+80/70