Add 20/40 and 90/5
1st number: 20/40, 2nd number: 18 0/5
20/40 + 90/5 is 37/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 5 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
20/40 = 20 × 1/40 × 1 = 20/40 - Likewise, for the 2nd fraction, since 5 × 8 = 40,
90/5 = 90 × 8/5 × 8 = 720/40 - Add the two like fractions:
20/40 + 720/40 = 20 + 720/40 = 740/40 - 740/40 simplified gives 37/2
- So, 20/40 + 90/5 = 37/2
In mixed form: 181/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/80+90/5 20/40+90/10 60/40+90/5 20/40+90/15 20/40+90/25 20/40+90/35