Add 7/20 and 30/35
7/20 + 30/35 is 169/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 35 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
7/20 = 7 × 7/20 × 7 = 49/140 - Likewise, for the 2nd fraction, since 35 × 4 = 140,
30/35 = 30 × 4/35 × 4 = 120/140 - Add the two like fractions:
49/140 + 120/140 = 49 + 120/140 = 169/140 - So, 7/20 + 30/35 = 169/140
In mixed form: 129/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/20+30/35 7/20+60/35 7/40+30/35 7/20+30/70 21/20+30/35 7/20+90/35 7/60+30/35 35/20+30/35 49/20+30/35