Add 1/7 and 90/70
1st number: 1/7, 2nd number: 1 20/70
1/7 + 90/70 is 10/7.
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,
1/7 = 1 × 10/7 × 10 = 10/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
90/70 = 90 × 1/70 × 1 = 90/70 - Add the two like fractions:
10/70 + 90/70 = 10 + 90/70 = 100/70 - 100/70 simplified gives 10/7
- So, 1/7 + 90/70 = 10/7
In mixed form: 13/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/7+90/70 1/14+90/70 3/7+90/70 1/21+90/70 5/7+90/70 1/35+90/70 1/49+90/70