Add 50/30 and 80/70
1st number: 1 20/30, 2nd number: 1 10/70
50/30 + 80/70 is 59/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
50/30 = 50 × 7/30 × 7 = 350/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
80/70 = 80 × 3/70 × 3 = 240/210 - Add the two like fractions:
350/210 + 240/210 = 350 + 240/210 = 590/210 - 590/210 simplified gives 59/21
- So, 50/30 + 80/70 = 59/21
In mixed form: 217/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/60+80/70 50/90+80/70