Add 42/18 and 56/70
1st number: 2 6/18, 2nd number: 56/70
42/18 + 56/70 is 47/15.
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,
56/70 = 56 × 9/70 × 9 = 504/630 - Add the two like fractions:
1470/630 + 504/630 = 1470 + 504/630 = 1974/630 - 1974/630 simplified gives 47/15
- So, 42/18 + 56/70 = 47/15
In mixed form: 32/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18+56/70 42/36+56/70 42/54+56/70 42/90+56/70