Add 16/18 and 25/40
16/18 + 25/40 is 109/72.
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,
25/40 = 25 × 9/40 × 9 = 225/360 - Add the two like fractions:
320/360 + 225/360 = 320 + 225/360 = 545/360 - 545/360 simplified gives 109/72
- So, 16/18 + 25/40 = 109/72
In mixed form: 137/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/18+25/40 16/18+50/40 16/36+25/40 16/18+25/80 48/18+25/40 16/18+75/40 16/54+25/40 80/18+25/40 16/90+25/40