Add 42/72 and 45/98
42/72 + 45/98 is 613/588.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 98 is 3528
Next, find the equivalent fraction of both fractional numbers with denominator 3528 - For the 1st fraction, since 72 × 49 = 3528,
42/72 = 42 × 49/72 × 49 = 2058/3528 - Likewise, for the 2nd fraction, since 98 × 36 = 3528,
45/98 = 45 × 36/98 × 36 = 1620/3528 - Add the two like fractions:
2058/3528 + 1620/3528 = 2058 + 1620/3528 = 3678/3528 - 3678/3528 simplified gives 613/588
- So, 42/72 + 45/98 = 613/588
In mixed form: 125/588
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/72+45/98 42/72+90/98