Subtract 70/50 from 10/18
1st number: 10/18, 2nd number: 1 20/50
10/18 - 70/50 is -38/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 50 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 18 × 25 = 450,
10/18 = 10 × 25/18 × 25 = 250/450 - Likewise, for the 2nd fraction, since 50 × 9 = 450,
70/50 = 70 × 9/50 × 9 = 630/450 - Subtract the two like fractions:
250/450 - 630/450 = 250 - 630/450 = -380/450 - After reducing the fraction, the answer is -38/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/18-70/50 10/36-70/50 30/18-70/50 10/54-70/50 50/18-70/50 10/90-70/50 70/18-70/50