Add 20/3 and 70/49
1st number: 6 2/3, 2nd number: 1 21/49
20/3 + 70/49 is 170/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 49 is 147
Next, find the equivalent fraction of both fractional numbers with denominator 147 - For the 1st fraction, since 3 × 49 = 147,
20/3 = 20 × 49/3 × 49 = 980/147 - Likewise, for the 2nd fraction, since 49 × 3 = 147,
70/49 = 70 × 3/49 × 3 = 210/147 - Add the two like fractions:
980/147 + 210/147 = 980 + 210/147 = 1190/147 - 1190/147 simplified gives 170/21
- So, 20/3 + 70/49 = 170/21
In mixed form: 82/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/3+70/49 20/6+70/49 20/3+70/98 60/3+70/49 20/9+70/49 20/15+70/49 20/21+70/49