Add 3/42 and 10/70
3/42 + 10/70 is 3/14.
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,
3/42 = 3 × 5/42 × 5 = 15/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
10/70 = 10 × 3/70 × 3 = 30/210 - Add the two like fractions:
15/210 + 30/210 = 15 + 30/210 = 45/210 - 45/210 simplified gives 3/14
- So, 3/42 + 10/70 = 3/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/42+10/70 3/42+20/70 3/84+10/70 9/42+10/70 3/42+30/70 15/42+10/70 3/42+50/70 21/42+10/70