Add 10/70 and 30/42
10/70 + 30/42 is 6/7.
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,
10/70 = 10 × 3/70 × 3 = 30/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
30/42 = 30 × 5/42 × 5 = 150/210 - Add the two like fractions:
30/210 + 150/210 = 30 + 150/210 = 180/210 - 180/210 simplified gives 6/7
- So, 10/70 + 30/42 = 6/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/70+30/42 10/70+60/42 10/70+30/84 30/70+30/42 10/70+90/42 50/70+30/42