Add 70/20 and 35/18
1st number: 3 10/20, 2nd number: 1 17/18
70/20 + 35/18 is 49/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
70/20 = 70 × 9/20 × 9 = 630/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
35/18 = 35 × 10/18 × 10 = 350/180 - Add the two like fractions:
630/180 + 350/180 = 630 + 350/180 = 980/180 - 980/180 simplified gives 49/9
- So, 70/20 + 35/18 = 49/9
In mixed form: 54/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/20+70/18 70/40+35/18 70/20+35/36 70/60+35/18 70/20+35/54 70/20+35/90