Subtract 90/35 from 80/4
1st number: 20 0/4, 2nd number: 2 20/35
80/4 - 90/35 is 122/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 35 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 4 × 35 = 140,
80/4 = 80 × 35/4 × 35 = 2800/140 - Likewise, for the 2nd fraction, since 35 × 4 = 140,
90/35 = 90 × 4/35 × 4 = 360/140 - Subtract the two like fractions:
2800/140 - 360/140 = 2800 - 360/140 = 2440/140 - After reducing the fraction, the answer is 122/7
- In mixed form: 173/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/8-90/35 80/4-90/70 80/12-90/35 80/20-90/35 80/28-90/35