Subtract 42/6 from 40/42
1st number: 40/42, 2nd number: 7 0/6
40/42 - 42/6 is -127/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 6 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
40/42 = 40 × 1/42 × 1 = 40/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
42/6 = 42 × 7/6 × 7 = 294/42 - Subtract the two like fractions:
40/42 - 294/42 = 40 - 294/42 = -254/42 - After reducing the fraction, the answer is -127/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/42-42/6 40/42-84/6 40/84-42/6 40/42-42/12 40/42-42/18 40/42-42/30