Add 90/75 and 1/20
1st number: 1 15/75, 2nd number: 1/20
90/75 + 1/20 is 5/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 20 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 20 × 15 = 300,
1/20 = 1 × 15/20 × 15 = 15/300 - Add the two like fractions:
360/300 + 15/300 = 360 + 15/300 = 375/300 - 375/300 simplified gives 5/4
- So, 90/75 + 1/20 = 5/4
In mixed form: 11/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/75+2/20 90/75+1/40 90/75+3/20 90/75+1/60 90/75+5/20 90/75+7/20