Add 56/90 and 8/20
56/90 + 8/20 is 46/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
56/90 = 56 × 2/90 × 2 = 112/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
8/20 = 8 × 9/20 × 9 = 72/180 - Add the two like fractions:
112/180 + 72/180 = 112 + 72/180 = 184/180 - 184/180 simplified gives 46/45
- So, 56/90 + 8/20 = 46/45
In mixed form: 11/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/90+16/20 56/90+8/40 56/90+24/20 56/90+8/60 56/90+40/20 56/90+56/20