Add 80/12 and 70/7
1st number: 6 8/12, 2nd number: 10 0/7
80/12 + 70/7 is 50/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
80/12 = 80 × 7/12 × 7 = 560/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
70/7 = 70 × 12/7 × 12 = 840/84 - Add the two like fractions:
560/84 + 840/84 = 560 + 840/84 = 1400/84 - 1400/84 simplified gives 50/3
- So, 80/12 + 70/7 = 50/3
In mixed form: 162/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/24+70/7 80/12+70/14 80/36+70/7 80/12+70/21 80/60+70/7 80/12+70/35 80/84+70/7 80/12+70/49