Subtract 15/70 from 30/4
1st number: 7 2/4, 2nd number: 15/70
30/4 - 15/70 is 51/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 4 × 35 = 140,
30/4 = 30 × 35/4 × 35 = 1050/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
15/70 = 15 × 2/70 × 2 = 30/140 - Subtract the two like fractions:
1050/140 - 30/140 = 1050 - 30/140 = 1020/140 - After reducing the fraction, the answer is 51/7
- In mixed form: 72/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/4-15/70 30/4-30/70 30/8-15/70 90/4-15/70 30/4-45/70 30/12-15/70 30/4-75/70 30/20-15/70 30/28-15/70