Add 30/42 and 45/49
30/42 + 45/49 is 80/49.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 49 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 42 × 7 = 294,
30/42 = 30 × 7/42 × 7 = 210/294 - Likewise, for the 2nd fraction, since 49 × 6 = 294,
45/49 = 45 × 6/49 × 6 = 270/294 - Add the two like fractions:
210/294 + 270/294 = 210 + 270/294 = 480/294 - 480/294 simplified gives 80/49
- So, 30/42 + 45/49 = 80/49
In mixed form: 131/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/42+45/49 30/42+90/49 30/84+45/49 30/42+45/98 90/42+45/49