Add 80/35 and 4/21
1st number: 2 10/35, 2nd number: 4/21
80/35 + 4/21 is 52/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 35 × 3 = 105,
80/35 = 80 × 3/35 × 3 = 240/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
4/21 = 4 × 5/21 × 5 = 20/105 - Add the two like fractions:
240/105 + 20/105 = 240 + 20/105 = 260/105 - 260/105 simplified gives 52/21
- So, 80/35 + 4/21 = 52/21
In mixed form: 210/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/35+8/21 80/70+4/21 80/35+4/42 80/35+12/21 80/35+4/63 80/35+20/21 80/35+28/21