Add 15/4 and 45/75
1st number: 3 3/4, 2nd number: 45/75
15/4 + 45/75 is 87/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 75 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 4 × 75 = 300,
15/4 = 15 × 75/4 × 75 = 1125/300 - Likewise, for the 2nd fraction, since 75 × 4 = 300,
45/75 = 45 × 4/75 × 4 = 180/300 - Add the two like fractions:
1125/300 + 180/300 = 1125 + 180/300 = 1305/300 - 1305/300 simplified gives 87/20
- So, 15/4 + 45/75 = 87/20
In mixed form: 47/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/4+45/75 15/4+90/75 15/8+45/75 45/4+45/75 15/12+45/75 75/4+45/75 15/20+45/75 15/28+45/75