Subtract 30/42 from 15/2
1st number: 7 1/2, 2nd number: 30/42
15/2 - 30/42 is 95/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
15/2 = 15 × 21/2 × 21 = 315/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
30/42 = 30 × 1/42 × 1 = 30/42 - Subtract the two like fractions:
315/42 - 30/42 = 315 - 30/42 = 285/42 - After reducing the fraction, the answer is 95/14
- In mixed form: 611/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/2-30/42 15/2-60/42 15/4-30/42 15/2-30/84 45/2-30/42 15/2-90/42 15/6-30/42 75/2-30/42 15/10-30/42 15/14-30/42