Add 14/7 and 20/90
1st number: 2 0/7, 2nd number: 20/90
14/7 + 20/90 is 20/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 7 × 90 = 630,
14/7 = 14 × 90/7 × 90 = 1260/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
20/90 = 20 × 7/90 × 7 = 140/630 - Add the two like fractions:
1260/630 + 140/630 = 1260 + 140/630 = 1400/630 - 1400/630 simplified gives 20/9
- So, 14/7 + 20/90 = 20/9
In mixed form: 22/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/7+20/90 14/7+40/90 42/7+20/90 14/7+60/90 14/21+20/90 70/7+20/90 14/35+20/90 98/7+20/90 14/49+20/90