Add 30/70 and 16/20
30/70 + 16/20 is 43/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
30/70 = 30 × 2/70 × 2 = 60/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
16/20 = 16 × 7/20 × 7 = 112/140 - Add the two like fractions:
60/140 + 112/140 = 60 + 112/140 = 172/140 - 172/140 simplified gives 43/35
- So, 30/70 + 16/20 = 43/35
In mixed form: 18/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/70+16/20 30/70+32/20 30/70+16/40 90/70+16/20 30/70+48/20 30/70+16/60 30/70+80/20