Add 21/50 and 75/84
21/50 + 75/84 is 919/700.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 84 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 50 × 42 = 2100,
21/50 = 21 × 42/50 × 42 = 882/2100 - Likewise, for the 2nd fraction, since 84 × 25 = 2100,
75/84 = 75 × 25/84 × 25 = 1875/2100 - Add the two like fractions:
882/2100 + 1875/2100 = 882 + 1875/2100 = 2757/2100 - 2757/2100 simplified gives 919/700
- So, 21/50 + 75/84 = 919/700
In mixed form: 1219/700
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/50+75/84 63/50+75/84