Add 45/12 and 90/36
1st number: 3 9/12, 2nd number: 2 18/36
45/12 + 90/36 is 25/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
45/12 = 45 × 3/12 × 3 = 135/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
90/36 = 90 × 1/36 × 1 = 90/36 - Add the two like fractions:
135/36 + 90/36 = 135 + 90/36 = 225/36 - 225/36 simplified gives 25/4
- So, 45/12 + 90/36 = 25/4
In mixed form: 61/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12+90/36 45/24+90/36 45/12+90/72 45/36+90/36 45/60+90/36 45/84+90/36