Subtract 16/7 from 18/12
1st number: 1 6/12, 2nd number: 2 2/7
18/12 - 16/7 is -11/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
18/12 = 18 × 7/12 × 7 = 126/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
16/7 = 16 × 12/7 × 12 = 192/84 - Subtract the two like fractions:
126/84 - 192/84 = 126 - 192/84 = -66/84 - After reducing the fraction, the answer is -11/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12-16/7 18/12-32/7 18/24-16/7 18/12-16/14 54/12-16/7 18/12-48/7 18/36-16/7 18/12-16/21 90/12-16/7 18/12-80/7 18/60-16/7 18/12-16/35 18/84-16/7 18/12-16/49