Add 20/32 and 18/90
20/32 + 18/90 is 33/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 90 is 1440
Next, find the equivalent fraction of both fractional numbers with denominator 1440 - For the 1st fraction, since 32 × 45 = 1440,
20/32 = 20 × 45/32 × 45 = 900/1440 - Likewise, for the 2nd fraction, since 90 × 16 = 1440,
18/90 = 18 × 16/90 × 16 = 288/1440 - Add the two like fractions:
900/1440 + 288/1440 = 900 + 288/1440 = 1188/1440 - 1188/1440 simplified gives 33/40
- So, 20/32 + 18/90 = 33/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/32+18/90 20/32+36/90 20/64+18/90 60/32+18/90 20/32+54/90 20/96+18/90