Add 45/72 and 75/90
45/72 + 75/90 is 35/24.
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,
45/72 = 45 × 5/72 × 5 = 225/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
75/90 = 75 × 4/90 × 4 = 300/360 - Add the two like fractions:
225/360 + 300/360 = 225 + 300/360 = 525/360 - 525/360 simplified gives 35/24
- So, 45/72 + 75/90 = 35/24
In mixed form: 111/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/72+75/90