Add 28/30 and 20/35
28/30 + 20/35 is 158/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 35 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 35 × 6 = 210,
20/35 = 20 × 6/35 × 6 = 120/210 - Add the two like fractions:
196/210 + 120/210 = 196 + 120/210 = 316/210 - 316/210 simplified gives 158/105
- So, 28/30 + 20/35 = 158/105
In mixed form: 153/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30+20/35 28/30+40/35 28/60+20/35 28/30+20/70 84/30+20/35 28/30+60/35 28/90+20/35