Add 10/20 and 45/49
10/20 + 45/49 is 139/98.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 49 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 20 × 49 = 980,
10/20 = 10 × 49/20 × 49 = 490/980 - Likewise, for the 2nd fraction, since 49 × 20 = 980,
45/49 = 45 × 20/49 × 20 = 900/980 - Add the two like fractions:
490/980 + 900/980 = 490 + 900/980 = 1390/980 - 1390/980 simplified gives 139/98
- So, 10/20 + 45/49 = 139/98
In mixed form: 141/98
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20+90/49 10/40+45/49 10/20+45/98 30/20+45/49 10/60+45/49 50/20+45/49 70/20+45/49