Add 8/54 and 21/84
8/54 + 21/84 is 43/108.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 84 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 54 × 14 = 756,
8/54 = 8 × 14/54 × 14 = 112/756 - Likewise, for the 2nd fraction, since 84 × 9 = 756,
21/84 = 21 × 9/84 × 9 = 189/756 - Add the two like fractions:
112/756 + 189/756 = 112 + 189/756 = 301/756 - 301/756 simplified gives 43/108
- So, 8/54 + 21/84 = 43/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/54+21/84 8/54+42/84 24/54+21/84 8/54+63/84 40/54+21/84 56/54+21/84