Add 20/70 and 2/3
20/70 + 2/3 is 20/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 3 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
20/70 = 20 × 3/70 × 3 = 60/210 - Likewise, for the 2nd fraction, since 3 × 70 = 210,
2/3 = 2 × 70/3 × 70 = 140/210 - Add the two like fractions:
60/210 + 140/210 = 60 + 140/210 = 200/210 - 200/210 simplified gives 20/21
- So, 20/70 + 2/3 = 20/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/70+2/3 20/70+4/3 20/70+2/6 60/70+2/3 20/70+6/3 20/70+2/9 20/70+10/3 20/70+2/15 20/70+14/3 20/70+2/21