Add 5/70 and 30/42
5/70 + 30/42 is 11/14.
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,
30/42 = 30 × 5/42 × 5 = 150/210 - Add the two like fractions:
15/210 + 150/210 = 15 + 150/210 = 165/210 - 165/210 simplified gives 11/14
- So, 5/70 + 30/42 = 11/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/70+30/42 5/70+60/42 5/70+30/84 15/70+30/42 5/70+90/42 25/70+30/42 35/70+30/42