Add 20/84 and 45/50
20/84 + 45/50 is 239/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 50 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 84 × 25 = 2100,
20/84 = 20 × 25/84 × 25 = 500/2100 - Likewise, for the 2nd fraction, since 50 × 42 = 2100,
45/50 = 45 × 42/50 × 42 = 1890/2100 - Add the two like fractions:
500/2100 + 1890/2100 = 500 + 1890/2100 = 2390/2100 - 2390/2100 simplified gives 239/210
- So, 20/84 + 45/50 = 239/210
In mixed form: 129/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/84+45/50 20/84+90/50 60/84+45/50