Add 30/70 and 24/63
30/70 + 24/63 is 17/21.
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,
30/70 = 30 × 9/70 × 9 = 270/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
24/63 = 24 × 10/63 × 10 = 240/630 - Add the two like fractions:
270/630 + 240/630 = 270 + 240/630 = 510/630 - 510/630 simplified gives 17/21
- So, 30/70 + 24/63 = 17/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/70+24/63 30/70+48/63 90/70+24/63 30/70+72/63