Subtract 45/30 from 5/80
1st number: 5/80, 2nd number: 1 15/30
5/80 - 45/30 is -23/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 30 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 80 × 3 = 240,
5/80 = 5 × 3/80 × 3 = 15/240 - Likewise, for the 2nd fraction, since 30 × 8 = 240,
45/30 = 45 × 8/30 × 8 = 360/240 - Subtract the two like fractions:
15/240 - 360/240 = 15 - 360/240 = -345/240 - After reducing the fraction, the answer is -23/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/80-45/30 5/80-90/30 5/80-45/60 15/80-45/30 5/80-45/90 25/80-45/30 35/80-45/30