Subtract 1/42 from 27/32
27/32 - 1/42 is 551/672.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 42 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 32 × 21 = 672,
27/32 = 27 × 21/32 × 21 = 567/672 - Likewise, for the 2nd fraction, since 42 × 16 = 672,
1/42 = 1 × 16/42 × 16 = 16/672 - Subtract the two like fractions:
567/672 - 16/672 = 567 - 16/672 = 551/672
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/32-1/42 27/32-2/42 27/64-1/42 27/32-1/84 81/32-1/42 27/32-3/42 27/96-1/42 27/32-5/42 27/32-7/42