Add 15/30 and 80/10
1st number: 15/30, 2nd number: 8 0/10
15/30 + 80/10 is 17/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 10 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
15/30 = 15 × 1/30 × 1 = 15/30 - Likewise, for the 2nd fraction, since 10 × 3 = 30,
80/10 = 80 × 3/10 × 3 = 240/30 - Add the two like fractions:
15/30 + 240/30 = 15 + 240/30 = 255/30 - 255/30 simplified gives 17/2
- So, 15/30 + 80/10 = 17/2
In mixed form: 81/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 15/60+80/10 15/30+80/20 45/30+80/10 15/90+80/10 15/30+80/30 75/30+80/10 15/30+80/50 15/30+80/70