Add 80/12 and 75/70
1st number: 6 8/12, 2nd number: 1 5/70
80/12 + 75/70 is 325/42.
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,
75/70 = 75 × 6/70 × 6 = 450/420 - Add the two like fractions:
2800/420 + 450/420 = 2800 + 450/420 = 3250/420 - 3250/420 simplified gives 325/42
- So, 80/12 + 75/70 = 325/42
In mixed form: 731/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/24+75/70 80/36+75/70 80/60+75/70 80/84+75/70