Add 90/75 and 3/12
1st number: 1 15/75, 2nd number: 3/12
90/75 + 3/12 is 29/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 12 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 75 × 4 = 300,
90/75 = 90 × 4/75 × 4 = 360/300 - Likewise, for the 2nd fraction, since 12 × 25 = 300,
3/12 = 3 × 25/12 × 25 = 75/300 - Add the two like fractions:
360/300 + 75/300 = 360 + 75/300 = 435/300 - 435/300 simplified gives 29/20
- So, 90/75 + 3/12 = 29/20
In mixed form: 19/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/75+6/12 90/75+3/24 90/75+9/12 90/75+3/36 90/75+15/12 90/75+3/60 90/75+21/12 90/75+3/84