Add 1/70 and 21/63
1/70 + 21/63 is 73/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
1/70 = 1 × 9/70 × 9 = 9/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
21/63 = 21 × 10/63 × 10 = 210/630 - Add the two like fractions:
9/630 + 210/630 = 9 + 210/630 = 219/630 - 219/630 simplified gives 73/210
- So, 1/70 + 21/63 = 73/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/70+21/63 1/70+42/63 3/70+21/63 5/70+21/63 7/70+21/63