Add 80/4 and 70/30
1st number: 20 0/4, 2nd number: 2 10/30
80/4 + 70/30 is 67/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 4 × 15 = 60,
80/4 = 80 × 15/4 × 15 = 1200/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
70/30 = 70 × 2/30 × 2 = 140/60 - Add the two like fractions:
1200/60 + 140/60 = 1200 + 140/60 = 1340/60 - 1340/60 simplified gives 67/3
- So, 80/4 + 70/30 = 67/3
In mixed form: 221/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/8+70/30 80/4+70/60 80/12+70/30 80/4+70/90 80/20+70/30 80/28+70/30