Add 1/63 and 21/70
1/63 + 21/70 is 199/630.
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,
1/63 = 1 × 10/63 × 10 = 10/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
21/70 = 21 × 9/70 × 9 = 189/630 - Add the two like fractions:
10/630 + 189/630 = 10 + 189/630 = 199/630 - So, 1/63 + 21/70 = 199/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/63+21/70 1/63+42/70 3/63+21/70 1/63+63/70 5/63+21/70 7/63+21/70