Add 20/90 and 30/32
20/90 + 30/32 is 167/144.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 32 is 1440
Next, find the equivalent fraction of both fractional numbers with denominator 1440 - For the 1st fraction, since 90 × 16 = 1440,
20/90 = 20 × 16/90 × 16 = 320/1440 - Likewise, for the 2nd fraction, since 32 × 45 = 1440,
30/32 = 30 × 45/32 × 45 = 1350/1440 - Add the two like fractions:
320/1440 + 1350/1440 = 320 + 1350/1440 = 1670/1440 - 1670/1440 simplified gives 167/144
- So, 20/90 + 30/32 = 167/144
In mixed form: 123/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/90+30/32 20/90+60/32 20/90+30/64 60/90+30/32 20/90+90/32 20/90+30/96