Subtract 12/6 from 63/42
1st number: 1 21/42, 2nd number: 2 0/6
63/42 - 12/6 is -1/2.
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,
63/42 = 63 × 1/42 × 1 = 63/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
12/6 = 12 × 7/6 × 7 = 84/42 - Subtract the two like fractions:
63/42 - 84/42 = 63 - 84/42 = -21/42 - After reducing the fraction, the answer is -1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/42-24/6 63/84-12/6 63/42-36/6 63/42-12/18 63/42-60/6 63/42-12/30 63/42-84/6 63/42-12/42