Subtract 80/30 from 3/90
1st number: 3/90, 2nd number: 2 20/30
3/90 - 80/30 is -79/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
3/90 = 3 × 1/90 × 1 = 3/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
80/30 = 80 × 3/30 × 3 = 240/90 - Subtract the two like fractions:
3/90 - 240/90 = 3 - 240/90 = -237/90 - After reducing the fraction, the answer is -79/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/90-80/30 3/90-80/60 9/90-80/30 3/90-80/90 15/90-80/30 21/90-80/30