Add 20/49 and 12/72
20/49 + 12/72 is 169/294.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 72 is 3528
Next, find the equivalent fraction of both fractional numbers with denominator 3528 - For the 1st fraction, since 49 × 72 = 3528,
20/49 = 20 × 72/49 × 72 = 1440/3528 - Likewise, for the 2nd fraction, since 72 × 49 = 3528,
12/72 = 12 × 49/72 × 49 = 588/3528 - Add the two like fractions:
1440/3528 + 588/3528 = 1440 + 588/3528 = 2028/3528 - 2028/3528 simplified gives 169/294
- So, 20/49 + 12/72 = 169/294
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/49+12/72 20/49+24/72 20/98+12/72 60/49+12/72 20/49+36/72 20/49+60/72 20/49+84/72