Subtract 84/7 from 9/18
1st number: 9/18, 2nd number: 12 0/7
9/18 - 84/7 is -23/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 7 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
9/18 = 9 × 7/18 × 7 = 63/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
84/7 = 84 × 18/7 × 18 = 1512/126 - Subtract the two like fractions:
63/126 - 1512/126 = 63 - 1512/126 = -1449/126 - After reducing the fraction, the answer is -23/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 9/36-84/7 9/18-84/14 27/18-84/7 9/54-84/7 9/18-84/21 45/18-84/7 9/90-84/7 9/18-84/35 63/18-84/7 9/18-84/49