Add 14/63 and 21/70
14/63 + 21/70 is 47/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
14/63 = 14 × 10/63 × 10 = 140/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
21/70 = 21 × 9/70 × 9 = 189/630 - Add the two like fractions:
140/630 + 189/630 = 140 + 189/630 = 329/630 - 329/630 simplified gives 47/90
- So, 14/63 + 21/70 = 47/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/63+21/70 14/63+42/70 42/63+21/70 14/63+63/70 70/63+21/70 98/63+21/70