Subtract 12/3 from 8/40
1st number: 8/40, 2nd number: 4 0/3
8/40 - 12/3 is -19/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 3 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
8/40 = 8 × 3/40 × 3 = 24/120 - Likewise, for the 2nd fraction, since 3 × 40 = 120,
12/3 = 12 × 40/3 × 40 = 480/120 - Subtract the two like fractions:
24/120 - 480/120 = 24 - 480/120 = -456/120 - After reducing the fraction, the answer is -19/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/40-12/3 8/40-24/3 8/80-12/3 8/40-12/6 24/40-12/3 8/40-36/3 8/40-12/9 8/40-60/3 8/40-12/15 56/40-12/3 8/40-84/3 8/40-12/21