Add 10/42 and 5/70
10/42 + 5/70 is 13/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
10/42 = 10 × 5/42 × 5 = 50/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
5/70 = 5 × 3/70 × 3 = 15/210 - Add the two like fractions:
50/210 + 15/210 = 50 + 15/210 = 65/210 - 65/210 simplified gives 13/42
- So, 10/42 + 5/70 = 13/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/42+5/70 10/42+10/70 10/84+5/70 30/42+5/70 10/42+15/70 50/42+5/70 10/42+25/70 70/42+5/70 10/42+35/70