Add 90/20 and 12/4
1st number: 4 10/20, 2nd number: 3 0/4
90/20 + 12/4 is 15/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 4 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
90/20 = 90 × 1/20 × 1 = 90/20 - Likewise, for the 2nd fraction, since 4 × 5 = 20,
12/4 = 12 × 5/4 × 5 = 60/20 - Add the two like fractions:
90/20 + 60/20 = 90 + 60/20 = 150/20 - 150/20 simplified gives 15/2
- So, 90/20 + 12/4 = 15/2
In mixed form: 71/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/20+24/4 90/40+12/4 90/20+12/8 90/20+36/4 90/60+12/4 90/20+60/4 90/20+12/20 90/20+84/4 90/20+12/28