Add 70/35 and 9/42
1st number: 2 0/35, 2nd number: 9/42
70/35 + 9/42 is 31/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 35 × 6 = 210,
70/35 = 70 × 6/35 × 6 = 420/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
9/42 = 9 × 5/42 × 5 = 45/210 - Add the two like fractions:
420/210 + 45/210 = 420 + 45/210 = 465/210 - 465/210 simplified gives 31/14
- So, 70/35 + 9/42 = 31/14
In mixed form: 23/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/35+18/42 70/35+9/84 70/35+27/42 70/35+45/42 70/35+63/42