Add 18/32 and 20/45
18/32 + 20/45 is 145/144.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 45 is 1440
Next, find the equivalent fraction of both fractional numbers with denominator 1440 - For the 1st fraction, since 32 × 45 = 1440,
18/32 = 18 × 45/32 × 45 = 810/1440 - Likewise, for the 2nd fraction, since 45 × 32 = 1440,
20/45 = 20 × 32/45 × 32 = 640/1440 - Add the two like fractions:
810/1440 + 640/1440 = 810 + 640/1440 = 1450/1440 - 1450/1440 simplified gives 145/144
- So, 18/32 + 20/45 = 145/144
In mixed form: 11/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/32+20/45 18/32+40/45 18/64+20/45 18/32+20/90 54/32+20/45 18/32+60/45 18/96+20/45 90/32+20/45