Add 56/90 and 75/84
56/90 + 75/84 is 1909/1260.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
56/90 = 56 × 14/90 × 14 = 784/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
75/84 = 75 × 15/84 × 15 = 1125/1260 - Add the two like fractions:
784/1260 + 1125/1260 = 784 + 1125/1260 = 1909/1260 - So, 56/90 + 75/84 = 1909/1260
In mixed form: 1649/1260
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: