Add 5/7 and 90/70
1st number: 5/7, 2nd number: 1 20/70
5/7 + 90/70 is 2/1.
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,
5/7 = 5 × 10/7 × 10 = 50/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
90/70 = 90 × 1/70 × 1 = 90/70 - Add the two like fractions:
50/70 + 90/70 = 50 + 90/70 = 140/70 - 140/70 simplified gives 2/1
- So, 5/7 + 90/70 = 2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/7+90/70 5/14+90/70 15/7+90/70 5/21+90/70 25/7+90/70 5/35+90/70 35/7+90/70 5/49+90/70