Subtract 1/42 from 54/30
1st number: 1 24/30, 2nd number: 1/42
54/30 - 1/42 is 373/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
54/30 = 54 × 7/30 × 7 = 378/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
1/42 = 1 × 5/42 × 5 = 5/210 - Subtract the two like fractions:
378/210 - 5/210 = 378 - 5/210 = 373/210 - In mixed form: 1163/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/30-2/42 54/60-1/42 54/30-1/84 54/30-3/42 54/90-1/42 54/30-5/42 54/30-7/42