Add 30/75 and 80/70
1st number: 30/75, 2nd number: 1 10/70
30/75 + 80/70 is 54/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 70 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 75 × 14 = 1050,
30/75 = 30 × 14/75 × 14 = 420/1050 - Likewise, for the 2nd fraction, since 70 × 15 = 1050,
80/70 = 80 × 15/70 × 15 = 1200/1050 - Add the two like fractions:
420/1050 + 1200/1050 = 420 + 1200/1050 = 1620/1050 - 1620/1050 simplified gives 54/35
- So, 30/75 + 80/70 = 54/35
In mixed form: 119/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/75+80/70 90/75+80/70