Subtract 70/45 from 18/2
1st number: 9 0/2, 2nd number: 1 25/45
18/2 - 70/45 is 67/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 2 × 45 = 90,
18/2 = 18 × 45/2 × 45 = 810/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
70/45 = 70 × 2/45 × 2 = 140/90 - Subtract the two like fractions:
810/90 - 140/90 = 810 - 140/90 = 670/90 - After reducing the fraction, the answer is 67/9
- In mixed form: 74/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/2-70/45 18/4-70/45 18/2-70/90 54/2-70/45 18/6-70/45 90/2-70/45 18/10-70/45 18/14-70/45