Add 42/18 and 10/70
1st number: 2 6/18, 2nd number: 10/70
42/18 + 10/70 is 52/21.
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,
42/18 = 42 × 35/18 × 35 = 1470/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
10/70 = 10 × 9/70 × 9 = 90/630 - Add the two like fractions:
1470/630 + 90/630 = 1470 + 90/630 = 1560/630 - 1560/630 simplified gives 52/21
- So, 42/18 + 10/70 = 52/21
In mixed form: 210/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18+10/70 42/18+20/70 42/36+10/70 42/18+30/70 42/54+10/70 42/18+50/70 42/90+10/70