Add 5/70 and 84/42
1st number: 5/70, 2nd number: 2 0/42
5/70 + 84/42 is 29/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
5/70 = 5 × 3/70 × 3 = 15/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
84/42 = 84 × 5/42 × 5 = 420/210 - Add the two like fractions:
15/210 + 420/210 = 15 + 420/210 = 435/210 - 435/210 simplified gives 29/14
- So, 5/70 + 84/42 = 29/14
In mixed form: 21/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/70+84/42 15/70+84/42 25/70+84/42 35/70+84/42