Add 45/90 and 15/4
1st number: 45/90, 2nd number: 3 3/4
45/90 + 15/4 is 17/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 4 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
45/90 = 45 × 2/90 × 2 = 90/180 - Likewise, for the 2nd fraction, since 4 × 45 = 180,
15/4 = 15 × 45/4 × 45 = 675/180 - Add the two like fractions:
90/180 + 675/180 = 90 + 675/180 = 765/180 - 765/180 simplified gives 17/4
- So, 45/90 + 15/4 = 17/4
In mixed form: 41/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 45/90+30/4 45/90+15/8 45/90+45/4 45/90+15/12 45/90+75/4 45/90+15/20 45/90+15/28