Add 16/18 and 20/40
16/18 + 20/40 is 25/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 18 × 20 = 360,
16/18 = 16 × 20/18 × 20 = 320/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
20/40 = 20 × 9/40 × 9 = 180/360 - Add the two like fractions:
320/360 + 180/360 = 320 + 180/360 = 500/360 - 500/360 simplified gives 25/18
- So, 16/18 + 20/40 = 25/18
In mixed form: 17/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/18+20/40 16/36+20/40 16/18+20/80 48/18+20/40 16/18+60/40 16/54+20/40 80/18+20/40 16/90+20/40