Add 30/20 and 70/49
1st number: 1 10/20, 2nd number: 1 21/49
30/20 + 70/49 is 41/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 49 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 20 × 49 = 980,
30/20 = 30 × 49/20 × 49 = 1470/980 - Likewise, for the 2nd fraction, since 49 × 20 = 980,
70/49 = 70 × 20/49 × 20 = 1400/980 - Add the two like fractions:
1470/980 + 1400/980 = 1470 + 1400/980 = 2870/980 - 2870/980 simplified gives 41/14
- So, 30/20 + 70/49 = 41/14
In mixed form: 213/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/20+70/49 30/40+70/49 30/20+70/98 90/20+70/49 30/60+70/49