Add 45/72 and 24/30
45/72 + 24/30 is 57/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 30 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 30 × 12 = 360,
24/30 = 24 × 12/30 × 12 = 288/360 - Add the two like fractions:
225/360 + 288/360 = 225 + 288/360 = 513/360 - 513/360 simplified gives 57/40
- So, 45/72 + 24/30 = 57/40
In mixed form: 117/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/72+24/30 45/72+48/30 45/72+24/60 45/72+72/30 45/72+24/90