Add 72/4 and 45/30
1st number: 18 0/4, 2nd number: 1 15/30
72/4 + 45/30 is 39/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 4 × 15 = 60,
72/4 = 72 × 15/4 × 15 = 1080/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
45/30 = 45 × 2/30 × 2 = 90/60 - Add the two like fractions:
1080/60 + 90/60 = 1080 + 90/60 = 1170/60 - 1170/60 simplified gives 39/2
- So, 72/4 + 45/30 = 39/2
In mixed form: 191/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/4+90/30 72/8+45/30 72/4+45/60 72/12+45/30 72/4+45/90 72/20+45/30 72/28+45/30