Subtract 70/10 from 28/18
1st number: 1 10/18, 2nd number: 7 0/10
28/18 - 70/10 is -49/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
28/18 = 28 × 5/18 × 5 = 140/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
70/10 = 70 × 9/10 × 9 = 630/90 - Subtract the two like fractions:
140/90 - 630/90 = 140 - 630/90 = -490/90 - After reducing the fraction, the answer is -49/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/18-70/10 28/36-70/10 28/18-70/20 84/18-70/10 28/54-70/10 28/18-70/30 28/90-70/10 28/18-70/50