Add 1/12 and 40/90
1/12 + 40/90 is 19/36.
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,
1/12 = 1 × 15/12 × 15 = 15/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
40/90 = 40 × 2/90 × 2 = 80/180 - Add the two like fractions:
15/180 + 80/180 = 15 + 80/180 = 95/180 - 95/180 simplified gives 19/36
- So, 1/12 + 40/90 = 19/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/12+40/90 1/12+80/90 1/24+40/90 3/12+40/90 1/36+40/90 5/12+40/90 1/60+40/90 7/12+40/90 1/84+40/90