Add 45/4 and 90/18
1st number: 11 1/4, 2nd number: 5 0/18
45/4 + 90/18 is 65/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 4 × 9 = 36,
45/4 = 45 × 9/4 × 9 = 405/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
90/18 = 90 × 2/18 × 2 = 180/36 - Add the two like fractions:
405/36 + 180/36 = 405 + 180/36 = 585/36 - 585/36 simplified gives 65/4
- So, 45/4 + 90/18 = 65/4
In mixed form: 161/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/4+90/18 45/8+90/18 45/4+90/36 45/12+90/18 45/4+90/54 45/20+90/18 45/28+90/18