Add 18/42 and 40/49
18/42 + 40/49 is 61/49.
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,
18/42 = 18 × 7/42 × 7 = 126/294 - Likewise, for the 2nd fraction, since 49 × 6 = 294,
40/49 = 40 × 6/49 × 6 = 240/294 - Add the two like fractions:
126/294 + 240/294 = 126 + 240/294 = 366/294 - 366/294 simplified gives 61/49
- So, 18/42 + 40/49 = 61/49
In mixed form: 112/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/42+40/49 18/42+80/49 18/84+40/49 18/42+40/98 54/42+40/49 90/42+40/49