Subtract 84/9 from 9/40
1st number: 9/40, 2nd number: 9 3/9
9/40 - 84/9 is -1093/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 9 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
9/40 = 9 × 9/40 × 9 = 81/360 - Likewise, for the 2nd fraction, since 9 × 40 = 360,
84/9 = 84 × 40/9 × 40 = 3360/360 - Subtract the two like fractions:
81/360 - 3360/360 = 81 - 3360/360 = -3279/360 - After reducing the fraction, the answer is -1093/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/40-84/9 9/80-84/9 9/40-84/18 27/40-84/9 9/40-84/27 45/40-84/9 9/40-84/45 63/40-84/9 9/40-84/63