Add 20/72 and 9/49
20/72 + 9/49 is 407/882.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 49 is 3528
Next, find the equivalent fraction of both fractional numbers with denominator 3528 - For the 1st fraction, since 72 × 49 = 3528,
20/72 = 20 × 49/72 × 49 = 980/3528 - Likewise, for the 2nd fraction, since 49 × 72 = 3528,
9/49 = 9 × 72/49 × 72 = 648/3528 - Add the two like fractions:
980/3528 + 648/3528 = 980 + 648/3528 = 1628/3528 - 1628/3528 simplified gives 407/882
- So, 20/72 + 9/49 = 407/882
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/72+9/49 20/72+18/49 20/72+9/98 60/72+9/49 20/72+27/49 20/72+45/49 20/72+63/49