Add 18/80 and 70/20
1st number: 18/80, 2nd number: 3 10/20
18/80 + 70/20 is 149/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 20 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
18/80 = 18 × 1/80 × 1 = 18/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
70/20 = 70 × 4/20 × 4 = 280/80 - Add the two like fractions:
18/80 + 280/80 = 18 + 280/80 = 298/80 - 298/80 simplified gives 149/40
- So, 18/80 + 70/20 = 149/40
In mixed form: 329/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/80+70/20 18/80+70/40 54/80+70/20 18/80+70/60 90/80+70/20