Add 40/70 and 50/20
1st number: 40/70, 2nd number: 2 10/20
40/70 + 50/20 is 43/14.
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,
40/70 = 40 × 2/70 × 2 = 80/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
50/20 = 50 × 7/20 × 7 = 350/140 - Add the two like fractions:
80/140 + 350/140 = 80 + 350/140 = 430/140 - 430/140 simplified gives 43/14
- So, 40/70 + 50/20 = 43/14
In mixed form: 31/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/70+50/20 40/70+50/40 40/70+50/60