Subtract 42/63 from 18/32
18/32 - 42/63 is -5/48.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 63 is 2016
Next, find the equivalent fraction of both fractional numbers with denominator 2016 - For the 1st fraction, since 32 × 63 = 2016,
18/32 = 18 × 63/32 × 63 = 1134/2016 - Likewise, for the 2nd fraction, since 63 × 32 = 2016,
42/63 = 42 × 32/63 × 32 = 1344/2016 - Subtract the two like fractions:
1134/2016 - 1344/2016 = 1134 - 1344/2016 = -210/2016 - After reducing the fraction, the answer is -5/48
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/32-42/63 18/32-84/63 18/64-42/63 54/32-42/63 18/96-42/63 90/32-42/63