Subtract 10/63 from 54/42
1st number: 1 12/42, 2nd number: 10/63
54/42 - 10/63 is 71/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
54/42 = 54 × 3/42 × 3 = 162/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
10/63 = 10 × 2/63 × 2 = 20/126 - Subtract the two like fractions:
162/126 - 20/126 = 162 - 20/126 = 142/126 - After reducing the fraction, the answer is 71/63
- In mixed form: 18/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42-20/63 54/84-10/63 54/42-30/63 54/42-50/63 54/42-70/63