Add 12/5 and 80/70
1st number: 2 2/5, 2nd number: 1 10/70
12/5 + 80/70 is 124/35.
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,
12/5 = 12 × 14/5 × 14 = 168/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
80/70 = 80 × 1/70 × 1 = 80/70 - Add the two like fractions:
168/70 + 80/70 = 168 + 80/70 = 248/70 - 248/70 simplified gives 124/35
- So, 12/5 + 80/70 = 124/35
In mixed form: 319/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/5+80/70 12/10+80/70 36/5+80/70 12/15+80/70 60/5+80/70 12/25+80/70 84/5+80/70 12/35+80/70