Subtract 84/9 from 40/5
1st number: 8 0/5, 2nd number: 9 3/9
40/5 - 84/9 is -4/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 5 × 9 = 45,
40/5 = 40 × 9/5 × 9 = 360/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
84/9 = 84 × 5/9 × 5 = 420/45 - Subtract the two like fractions:
360/45 - 420/45 = 360 - 420/45 = -60/45 - After reducing the fraction, the answer is -4/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/5-84/9 40/10-84/9 40/5-84/18 40/15-84/9 40/5-84/27 40/25-84/9 40/5-84/45 40/35-84/9 40/5-84/63