Add 10/42 and 70/35
1st number: 10/42, 2nd number: 2 0/35
10/42 + 70/35 is 47/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 35 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 35 × 6 = 210,
70/35 = 70 × 6/35 × 6 = 420/210 - Add the two like fractions:
50/210 + 420/210 = 50 + 420/210 = 470/210 - 470/210 simplified gives 47/21
- So, 10/42 + 70/35 = 47/21
In mixed form: 25/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/42+70/35 10/84+70/35 30/42+70/35 50/42+70/35 70/42+70/35