Add 20/42 and 1/70
20/42 + 1/70 is 103/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
20/42 = 20 × 5/42 × 5 = 100/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
1/70 = 1 × 3/70 × 3 = 3/210 - Add the two like fractions:
100/210 + 3/210 = 100 + 3/210 = 103/210 - So, 20/42 + 1/70 = 103/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/42+1/70 20/42+2/70 20/84+1/70 60/42+1/70 20/42+3/70 20/42+5/70 20/42+7/70