Add 56/90 and 18/72
56/90 + 18/72 is 157/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
56/90 = 56 × 4/90 × 4 = 224/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
18/72 = 18 × 5/72 × 5 = 90/360 - Add the two like fractions:
224/360 + 90/360 = 224 + 90/360 = 314/360 - 314/360 simplified gives 157/180
- So, 56/90 + 18/72 = 157/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/90+36/72 56/90+54/72 56/90+90/72