Add 14/45 and 21/70
14/45 + 21/70 is 11/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
14/45 = 14 × 14/45 × 14 = 196/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
21/70 = 21 × 9/70 × 9 = 189/630 - Add the two like fractions:
196/630 + 189/630 = 196 + 189/630 = 385/630 - 385/630 simplified gives 11/18
- So, 14/45 + 21/70 = 11/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/45+21/70 14/45+42/70 14/90+21/70 42/45+21/70 14/45+63/70 70/45+21/70 98/45+21/70