Add 90/84 and 36/56
1st number: 1 6/84, 2nd number: 36/56
90/84 + 36/56 is 12/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 84 × 2 = 168,
90/84 = 90 × 2/84 × 2 = 180/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
36/56 = 36 × 3/56 × 3 = 108/168 - Add the two like fractions:
180/168 + 108/168 = 180 + 108/168 = 288/168 - 288/168 simplified gives 12/7
- So, 90/84 + 36/56 = 12/7
In mixed form: 15/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/84+72/56