Add 28/30 and 70/75
28/30 + 70/75 is 28/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 75 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 30 × 5 = 150,
28/30 = 28 × 5/30 × 5 = 140/150 - Likewise, for the 2nd fraction, since 75 × 2 = 150,
70/75 = 70 × 2/75 × 2 = 140/150 - Add the two like fractions:
140/150 + 140/150 = 140 + 140/150 = 280/150 - 280/150 simplified gives 28/15
- So, 28/30 + 70/75 = 28/15
In mixed form: 113/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30+70/75 28/60+70/75 84/30+70/75 28/90+70/75