Add 12/90 and 75/54
1st number: 12/90, 2nd number: 1 21/54
12/90 + 75/54 is 137/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 90 × 3 = 270,
12/90 = 12 × 3/90 × 3 = 36/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
75/54 = 75 × 5/54 × 5 = 375/270 - Add the two like fractions:
36/270 + 375/270 = 36 + 375/270 = 411/270 - 411/270 simplified gives 137/90
- So, 12/90 + 75/54 = 137/90
In mixed form: 147/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/90+75/54 36/90+75/54 60/90+75/54 84/90+75/54