Add 7/10 and 18/20
7/10 + 18/20 is 8/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 10 × 2 = 20,
7/10 = 7 × 2/10 × 2 = 14/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
18/20 = 18 × 1/20 × 1 = 18/20 - Add the two like fractions:
14/20 + 18/20 = 14 + 18/20 = 32/20 - 32/20 simplified gives 8/5
- So, 7/10 + 18/20 = 8/5
In mixed form: 13/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/10+18/20 7/10+36/20 7/20+18/20 7/10+18/40 21/10+18/20 7/10+54/20 7/30+18/20 7/10+18/60 35/10+18/20 7/10+90/20 7/50+18/20 49/10+18/20 7/70+18/20