Add 18/12 and 8/90
1st number: 1 6/12, 2nd number: 8/90
18/12 + 8/90 is 143/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
18/12 = 18 × 15/12 × 15 = 270/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
8/90 = 8 × 2/90 × 2 = 16/180 - Add the two like fractions:
270/180 + 16/180 = 270 + 16/180 = 286/180 - 286/180 simplified gives 143/90
- So, 18/12 + 8/90 = 143/90
In mixed form: 153/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12+8/90 18/12+16/90 18/24+8/90 54/12+8/90 18/12+24/90 18/36+8/90 90/12+8/90 18/12+40/90 18/60+8/90 18/12+56/90 18/84+8/90