Add 7/10 and 20/70
7/10 + 20/70 is 69/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 10 × 7 = 70,
7/10 = 7 × 7/10 × 7 = 49/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
20/70 = 20 × 1/70 × 1 = 20/70 - Add the two like fractions:
49/70 + 20/70 = 49 + 20/70 = 69/70 - So, 7/10 + 20/70 = 69/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/10+20/70 7/10+40/70 7/20+20/70 21/10+20/70 7/10+60/70 7/30+20/70 35/10+20/70 7/50+20/70 49/10+20/70 7/70+20/70