Add 42/18 and 35/45
1st number: 2 6/18, 2nd number: 35/45
42/18 + 35/45 is 28/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
42/18 = 42 × 5/18 × 5 = 210/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
35/45 = 35 × 2/45 × 2 = 70/90 - Add the two like fractions:
210/90 + 70/90 = 210 + 70/90 = 280/90 - 280/90 simplified gives 28/9
- So, 42/18 + 35/45 = 28/9
In mixed form: 31/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18+35/45 42/18+70/45 42/36+35/45 42/18+35/90 42/54+35/45 42/90+35/45