Add 72/90 and 54/12
1st number: 72/90, 2nd number: 4 6/12
72/90 + 54/12 is 53/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
72/90 = 72 × 2/90 × 2 = 144/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
54/12 = 54 × 15/12 × 15 = 810/180 - Add the two like fractions:
144/180 + 810/180 = 144 + 810/180 = 954/180 - 954/180 simplified gives 53/10
- So, 72/90 + 54/12 = 53/10
In mixed form: 53/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/90+54/24 72/90+54/36 72/90+54/60 72/90+54/84