Subtract 5/32 from 40/42
40/42 - 5/32 is 535/672.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 32 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 42 × 16 = 672,
40/42 = 40 × 16/42 × 16 = 640/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
5/32 = 5 × 21/32 × 21 = 105/672 - Subtract the two like fractions:
640/672 - 105/672 = 640 - 105/672 = 535/672
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/42-5/32 40/42-10/32 40/84-5/32 40/42-5/64 40/42-15/32 40/42-5/96 40/42-25/32 40/42-35/32