Add 8/90 and 90/72
1st number: 8/90, 2nd number: 1 18/72
8/90 + 90/72 is 241/180.
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,
8/90 = 8 × 4/90 × 4 = 32/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
90/72 = 90 × 5/72 × 5 = 450/360 - Add the two like fractions:
32/360 + 450/360 = 32 + 450/360 = 482/360 - 482/360 simplified gives 241/180
- So, 8/90 + 90/72 = 241/180
In mixed form: 161/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/90+90/72 24/90+90/72 40/90+90/72 56/90+90/72