Add 18/70 and 42/9
1st number: 18/70, 2nd number: 4 6/9
18/70 + 42/9 is 517/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 9 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
18/70 = 18 × 9/70 × 9 = 162/630 - Likewise, for the 2nd fraction, since 9 × 70 = 630,
42/9 = 42 × 70/9 × 70 = 2940/630 - Add the two like fractions:
162/630 + 2940/630 = 162 + 2940/630 = 3102/630 - 3102/630 simplified gives 517/105
- So, 18/70 + 42/9 = 517/105
In mixed form: 497/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/70+42/9 18/70+84/9 18/70+42/18 54/70+42/9 18/70+42/27 90/70+42/9 18/70+42/45 18/70+42/63