Add 80/5 and 30/70
1st number: 16 0/5, 2nd number: 30/70
80/5 + 30/70 is 115/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 5 × 14 = 70,
80/5 = 80 × 14/5 × 14 = 1120/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
30/70 = 30 × 1/70 × 1 = 30/70 - Add the two like fractions:
1120/70 + 30/70 = 1120 + 30/70 = 1150/70 - 1150/70 simplified gives 115/7
- So, 80/5 + 30/70 = 115/7
In mixed form: 163/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/5+60/70 80/10+30/70 80/5+90/70 80/15+30/70 80/25+30/70 80/35+30/70