Add 70/20 and 75/9
1st number: 3 10/20, 2nd number: 8 3/9
70/20 + 75/9 is 71/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 9 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 9 × 20 = 180,
75/9 = 75 × 20/9 × 20 = 1500/180 - Add the two like fractions:
630/180 + 1500/180 = 630 + 1500/180 = 2130/180 - 2130/180 simplified gives 71/6
- So, 70/20 + 75/9 = 71/6
In mixed form: 115/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/40+75/9 70/20+75/18 70/60+75/9 70/20+75/27 70/20+75/45 70/20+75/63