Add 40/90 and 25/60
40/90 + 25/60 is 31/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 60 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 60 × 3 = 180,
25/60 = 25 × 3/60 × 3 = 75/180 - Add the two like fractions:
80/180 + 75/180 = 80 + 75/180 = 155/180 - 155/180 simplified gives 31/36
- So, 40/90 + 25/60 = 31/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/90+25/60 40/90+50/60 40/90+75/60