Add 70/84 and 20/54
70/84 + 20/54 is 65/54.
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,
70/84 = 70 × 9/84 × 9 = 630/756 - Likewise, for the 2nd fraction, since 54 × 14 = 756,
20/54 = 20 × 14/54 × 14 = 280/756 - Add the two like fractions:
630/756 + 280/756 = 630 + 280/756 = 910/756 - 910/756 simplified gives 65/54
- So, 70/84 + 20/54 = 65/54
In mixed form: 111/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/84+40/54 70/84+60/54