Add 20/30 and 20/35
20/30 + 20/35 is 26/21.
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,
20/30 = 20 × 7/30 × 7 = 140/210 - Likewise, for the 2nd fraction, since 35 × 6 = 210,
20/35 = 20 × 6/35 × 6 = 120/210 - Add the two like fractions:
140/210 + 120/210 = 140 + 120/210 = 260/210 - 260/210 simplified gives 26/21
- So, 20/30 + 20/35 = 26/21
In mixed form: 15/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/30+20/35 20/30+40/35 20/60+20/35 20/30+20/70 60/30+20/35 20/30+60/35 20/90+20/35