Subtract 9/40 from 84/7
1st number: 12 0/7, 2nd number: 9/40
84/7 - 9/40 is 471/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
84/7 = 84 × 40/7 × 40 = 3360/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
9/40 = 9 × 7/40 × 7 = 63/280 - Subtract the two like fractions:
3360/280 - 63/280 = 3360 - 63/280 = 3297/280 - After reducing the fraction, the answer is 471/40
- In mixed form: 1131/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/7-18/40 84/14-9/40 84/7-9/80 84/7-27/40 84/21-9/40 84/7-45/40 84/35-9/40 84/7-63/40 84/49-9/40