Add 20/15 and 80/14
1st number: 1 5/15, 2nd number: 5 10/14
20/15 + 80/14 is 148/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 14 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
20/15 = 20 × 14/15 × 14 = 280/210 - Likewise, for the 2nd fraction, since 14 × 15 = 210,
80/14 = 80 × 15/14 × 15 = 1200/210 - Add the two like fractions:
280/210 + 1200/210 = 280 + 1200/210 = 1480/210 - 1480/210 simplified gives 148/21
- So, 20/15 + 80/14 = 148/21
In mixed form: 71/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/15+80/14 20/30+80/14 20/15+80/28 60/15+80/14 20/45+80/14 20/15+80/42 20/75+80/14 20/15+80/70 20/15+80/98