Subtract 30/70 from 90/2
1st number: 45 0/2, 2nd number: 30/70
90/2 - 30/70 is 312/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 2 × 35 = 70,
90/2 = 90 × 35/2 × 35 = 3150/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
30/70 = 30 × 1/70 × 1 = 30/70 - Subtract the two like fractions:
3150/70 - 30/70 = 3150 - 30/70 = 3120/70 - After reducing the fraction, the answer is 312/7
- In mixed form: 444/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/2-60/70 90/4-30/70 90/2-90/70 90/6-30/70 90/10-30/70 90/14-30/70