Subtract 70/16 from 90/5
1st number: 18 0/5, 2nd number: 4 6/16
90/5 - 70/16 is 109/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 5 × 16 = 80,
90/5 = 90 × 16/5 × 16 = 1440/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
70/16 = 70 × 5/16 × 5 = 350/80 - Subtract the two like fractions:
1440/80 - 350/80 = 1440 - 350/80 = 1090/80 - After reducing the fraction, the answer is 109/8
- In mixed form: 135/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/10-70/16 90/5-70/32 90/15-70/16 90/5-70/48 90/25-70/16 90/5-70/80 90/35-70/16