Add 50/70 and 9/20
50/70 + 9/20 is 163/140.
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,
50/70 = 50 × 2/70 × 2 = 100/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
9/20 = 9 × 7/20 × 7 = 63/140 - Add the two like fractions:
100/140 + 63/140 = 100 + 63/140 = 163/140 - So, 50/70 + 9/20 = 163/140
In mixed form: 123/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/70+18/20 50/70+9/40 50/70+27/20 50/70+9/60 50/70+45/20 50/70+63/20