Add 14/18 and 20/70
14/18 + 20/70 is 67/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 18 × 35 = 630,
14/18 = 14 × 35/18 × 35 = 490/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
20/70 = 20 × 9/70 × 9 = 180/630 - Add the two like fractions:
490/630 + 180/630 = 490 + 180/630 = 670/630 - 670/630 simplified gives 67/63
- So, 14/18 + 20/70 = 67/63
In mixed form: 14/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/18+20/70 14/18+40/70 14/36+20/70 42/18+20/70 14/18+60/70 14/54+20/70 70/18+20/70 14/90+20/70 98/18+20/70