Add 12/72 and 50/90
12/72 + 50/90 is 13/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
12/72 = 12 × 5/72 × 5 = 60/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
50/90 = 50 × 4/90 × 4 = 200/360 - Add the two like fractions:
60/360 + 200/360 = 60 + 200/360 = 260/360 - 260/360 simplified gives 13/18
- So, 12/72 + 50/90 = 13/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/72+50/90 36/72+50/90 60/72+50/90 84/72+50/90