Subtract 7/90 from 70/50
1st number: 1 20/50, 2nd number: 7/90
70/50 - 7/90 is 119/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 50 × 9 = 450,
70/50 = 70 × 9/50 × 9 = 630/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
7/90 = 7 × 5/90 × 5 = 35/450 - Subtract the two like fractions:
630/450 - 35/450 = 630 - 35/450 = 595/450 - After reducing the fraction, the answer is 119/90
- In mixed form: 129/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/50-14/90 70/50-21/90 70/50-35/90 70/50-49/90