Add 42/84 and 10/9
1st number: 42/84, 2nd number: 1 1/9
42/84 + 10/9 is 29/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 9 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
42/84 = 42 × 3/84 × 3 = 126/252 - Likewise, for the 2nd fraction, since 9 × 28 = 252,
10/9 = 10 × 28/9 × 28 = 280/252 - Add the two like fractions:
126/252 + 280/252 = 126 + 280/252 = 406/252 - 406/252 simplified gives 29/18
- So, 42/84 + 10/9 = 29/18
In mixed form: 111/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/84+20/9 42/84+10/18 42/84+30/9 42/84+10/27 42/84+50/9 42/84+10/45 42/84+70/9 42/84+10/63