Add 90/54 and 12/84
1st number: 1 36/54, 2nd number: 12/84
90/54 + 12/84 is 38/21.
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,
90/54 = 90 × 14/54 × 14 = 1260/756 - Likewise, for the 2nd fraction, since 84 × 9 = 756,
12/84 = 12 × 9/84 × 9 = 108/756 - Add the two like fractions:
1260/756 + 108/756 = 1260 + 108/756 = 1368/756 - 1368/756 simplified gives 38/21
- So, 90/54 + 12/84 = 38/21
In mixed form: 117/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/54+24/84 90/54+36/84 90/54+60/84