Add 42/70 and 70/9
1st number: 42/70, 2nd number: 7 7/9
42/70 + 70/9 is 377/45.
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,
42/70 = 42 × 9/70 × 9 = 378/630 - Likewise, for the 2nd fraction, since 9 × 70 = 630,
70/9 = 70 × 70/9 × 70 = 4900/630 - Add the two like fractions:
378/630 + 4900/630 = 378 + 4900/630 = 5278/630 - 5278/630 simplified gives 377/45
- So, 42/70 + 70/9 = 377/45
In mixed form: 817/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/70+70/9 42/70+70/18 42/70+70/27 42/70+70/45 42/70+70/63