Subtract 70/14 from 18/12
1st number: 1 6/12, 2nd number: 5 0/14
18/12 - 70/14 is -7/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 14 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 14 × 6 = 84,
70/14 = 70 × 6/14 × 6 = 420/84 - Subtract the two like fractions:
126/84 - 420/84 = 126 - 420/84 = -294/84 - After reducing the fraction, the answer is -7/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12-70/14 18/24-70/14 18/12-70/28 54/12-70/14 18/36-70/14 18/12-70/42 90/12-70/14 18/60-70/14 18/84-70/14 18/12-70/98