Add 28/30 and 5/7
28/30 + 5/7 is 173/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 7 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
28/30 = 28 × 7/30 × 7 = 196/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
5/7 = 5 × 30/7 × 30 = 150/210 - Add the two like fractions:
196/210 + 150/210 = 196 + 150/210 = 346/210 - 346/210 simplified gives 173/105
- So, 28/30 + 5/7 = 173/105
In mixed form: 168/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30+5/7 28/30+10/7 28/60+5/7 28/30+5/14 84/30+5/7 28/30+15/7 28/90+5/7 28/30+5/21 28/30+25/7 28/30+5/35 28/30+35/7 28/30+5/49