Add 90/75 and 20/4
1st number: 1 15/75, 2nd number: 5 0/4
90/75 + 20/4 is 31/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 4 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 4 × 75 = 300,
20/4 = 20 × 75/4 × 75 = 1500/300 - Add the two like fractions:
360/300 + 1500/300 = 360 + 1500/300 = 1860/300 - 1860/300 simplified gives 31/5
- So, 90/75 + 20/4 = 31/5
In mixed form: 61/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/75+40/4 90/75+20/8 90/75+60/4 90/75+20/12 90/75+20/28