Add 12/20 and 90/75
1st number: 12/20, 2nd number: 1 15/75
12/20 + 90/75 is 9/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 75 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 20 × 15 = 300,
12/20 = 12 × 15/20 × 15 = 180/300 - Likewise, for the 2nd fraction, since 75 × 4 = 300,
90/75 = 90 × 4/75 × 4 = 360/300 - Add the two like fractions:
180/300 + 360/300 = 180 + 360/300 = 540/300 - 540/300 simplified gives 9/5
- So, 12/20 + 90/75 = 9/5
In mixed form: 14/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/20+90/75 12/40+90/75 36/20+90/75 12/60+90/75 60/20+90/75 84/20+90/75