Add 6/84 and 45/54
6/84 + 45/54 is 19/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 54 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 84 × 9 = 756,
6/84 = 6 × 9/84 × 9 = 54/756 - Likewise, for the 2nd fraction, since 54 × 14 = 756,
45/54 = 45 × 14/54 × 14 = 630/756 - Add the two like fractions:
54/756 + 630/756 = 54 + 630/756 = 684/756 - 684/756 simplified gives 19/21
- So, 6/84 + 45/54 = 19/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/84+45/54 6/84+90/54 18/84+45/54 30/84+45/54 42/84+45/54