Add 80/35 and 20/42
1st number: 2 10/35, 2nd number: 20/42
80/35 + 20/42 is 58/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 35 × 6 = 210,
80/35 = 80 × 6/35 × 6 = 480/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
20/42 = 20 × 5/42 × 5 = 100/210 - Add the two like fractions:
480/210 + 100/210 = 480 + 100/210 = 580/210 - 580/210 simplified gives 58/21
- So, 80/35 + 20/42 = 58/21
In mixed form: 216/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/35+40/42 80/70+20/42 80/35+20/84 80/35+60/42