Add 9/7 and 80/70
1st number: 1 2/7, 2nd number: 1 10/70
9/7 + 80/70 is 17/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 7 × 10 = 70,
9/7 = 9 × 10/7 × 10 = 90/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
80/70 = 80 × 1/70 × 1 = 80/70 - Add the two like fractions:
90/70 + 80/70 = 90 + 80/70 = 170/70 - 170/70 simplified gives 17/7
- So, 9/7 + 80/70 = 17/7
In mixed form: 23/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/7+80/70 9/14+80/70 27/7+80/70 9/21+80/70 45/7+80/70 9/35+80/70 63/7+80/70 9/49+80/70