Add 40/90 and 7/12
40/90 + 7/12 is 37/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
40/90 = 40 × 2/90 × 2 = 80/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
7/12 = 7 × 15/12 × 15 = 105/180 - Add the two like fractions:
80/180 + 105/180 = 80 + 105/180 = 185/180 - 185/180 simplified gives 37/36
- So, 40/90 + 7/12 = 37/36
In mixed form: 11/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/90+7/12 40/90+14/12 40/90+7/24 40/90+21/12 40/90+7/36 40/90+35/12 40/90+7/60 40/90+49/12 40/90+7/84