Subtract 10/32 from 10/42
10/42 - 10/32 is -25/336.
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,
10/42 = 10 × 16/42 × 16 = 160/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
10/32 = 10 × 21/32 × 21 = 210/672 - Subtract the two like fractions:
160/672 - 210/672 = 160 - 210/672 = -50/672 - After reducing the fraction, the answer is -25/336
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/42-10/32 10/42-20/32 10/84-10/32 10/42-10/64 30/42-10/32 10/42-30/32 10/42-10/96 50/42-10/32 10/42-50/32 70/42-10/32 10/42-70/32