Subtract 42/4 from 12/28
1st number: 12/28, 2nd number: 10 2/4
12/28 - 42/4 is -141/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 4 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 28 × 1 = 28,
12/28 = 12 × 1/28 × 1 = 12/28 - Likewise, for the 2nd fraction, since 4 × 7 = 28,
42/4 = 42 × 7/4 × 7 = 294/28 - Subtract the two like fractions:
12/28 - 294/28 = 12 - 294/28 = -282/28 - After reducing the fraction, the answer is -141/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/28-42/4 12/28-84/4 12/56-42/4 12/28-42/8 36/28-42/4 12/84-42/4 12/28-42/12 60/28-42/4 12/28-42/20 84/28-42/4 12/28-42/28