Add 8/18 and 30/70
8/18 + 30/70 is 55/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 18 × 35 = 630,
8/18 = 8 × 35/18 × 35 = 280/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
30/70 = 30 × 9/70 × 9 = 270/630 - Add the two like fractions:
280/630 + 270/630 = 280 + 270/630 = 550/630 - 550/630 simplified gives 55/63
- So, 8/18 + 30/70 = 55/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/18+30/70 8/18+60/70 8/36+30/70 24/18+30/70 8/18+90/70 8/54+30/70 40/18+30/70 8/90+30/70 56/18+30/70