Add 10/5 and 90/70
1st number: 2 0/5, 2nd number: 1 20/70
10/5 + 90/70 is 23/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 5 × 14 = 70,
10/5 = 10 × 14/5 × 14 = 140/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
90/70 = 90 × 1/70 × 1 = 90/70 - Add the two like fractions:
140/70 + 90/70 = 140 + 90/70 = 230/70 - 230/70 simplified gives 23/7
- So, 10/5 + 90/70 = 23/7
In mixed form: 32/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/5+90/70 30/5+90/70 10/15+90/70 50/5+90/70 10/25+90/70 70/5+90/70 10/35+90/70