Add 56/90 and 70/80
56/90 + 70/80 is 539/360.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
56/90 = 56 × 8/90 × 8 = 448/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
70/80 = 70 × 9/80 × 9 = 630/720 - Add the two like fractions:
448/720 + 630/720 = 448 + 630/720 = 1078/720 - 1078/720 simplified gives 539/360
- So, 56/90 + 70/80 = 539/360
In mixed form: 1179/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: