Subtract 36/7 from 18/28
1st number: 18/28, 2nd number: 5 1/7
18/28 - 36/7 is -9/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 7 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 28 × 1 = 28,
18/28 = 18 × 1/28 × 1 = 18/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
36/7 = 36 × 4/7 × 4 = 144/28 - Subtract the two like fractions:
18/28 - 144/28 = 18 - 144/28 = -126/28 - After reducing the fraction, the answer is -9/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/28-36/7 18/28-72/7 18/56-36/7 18/28-36/14 54/28-36/7 18/84-36/7 18/28-36/21 90/28-36/7 18/28-36/35 18/28-36/49