Subtract 2/10 from 54/42
1st number: 1 12/42, 2nd number: 2/10
54/42 - 2/10 is 38/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
54/42 = 54 × 5/42 × 5 = 270/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
2/10 = 2 × 21/10 × 21 = 42/210 - Subtract the two like fractions:
270/210 - 42/210 = 270 - 42/210 = 228/210 - After reducing the fraction, the answer is 38/35
- In mixed form: 13/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42-4/10 54/84-2/10 54/42-2/20 54/42-6/10 54/42-2/30 54/42-2/50 54/42-14/10 54/42-2/70