Add 80/12 and 54/70
1st number: 6 8/12, 2nd number: 54/70
80/12 + 54/70 is 781/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
80/12 = 80 × 35/12 × 35 = 2800/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
54/70 = 54 × 6/70 × 6 = 324/420 - Add the two like fractions:
2800/420 + 324/420 = 2800 + 324/420 = 3124/420 - 3124/420 simplified gives 781/105
- So, 80/12 + 54/70 = 781/105
In mixed form: 746/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/24+54/70 80/36+54/70 80/60+54/70 80/84+54/70