Subtract 18/80 from 12/3
1st number: 4 0/3, 2nd number: 18/80
12/3 - 18/80 is 151/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 3 × 80 = 240,
12/3 = 12 × 80/3 × 80 = 960/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
18/80 = 18 × 3/80 × 3 = 54/240 - Subtract the two like fractions:
960/240 - 54/240 = 960 - 54/240 = 906/240 - After reducing the fraction, the answer is 151/40
- In mixed form: 331/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/3-18/80 12/3-36/80 12/6-18/80 36/3-18/80 12/3-54/80 12/9-18/80 60/3-18/80 12/3-90/80 12/15-18/80 84/3-18/80 12/21-18/80