Subtract 45/7 from 18/32
1st number: 18/32, 2nd number: 6 3/7
18/32 - 45/7 is -657/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 7 is 224
Next, find the equivalent fraction of both fractional numbers with denominator 224 - For the 1st fraction, since 32 × 7 = 224,
18/32 = 18 × 7/32 × 7 = 126/224 - Likewise, for the 2nd fraction, since 7 × 32 = 224,
45/7 = 45 × 32/7 × 32 = 1440/224 - Subtract the two like fractions:
126/224 - 1440/224 = 126 - 1440/224 = -1314/224 - After reducing the fraction, the answer is -657/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/32-45/7 18/32-90/7 18/64-45/7 18/32-45/14 54/32-45/7 18/96-45/7 18/32-45/21 90/32-45/7 18/32-45/35 18/32-45/49