Subtract 18/90 from 90/35
1st number: 2 20/35, 2nd number: 18/90
90/35 - 18/90 is 83/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 35 × 18 = 630,
90/35 = 90 × 18/35 × 18 = 1620/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
18/90 = 18 × 7/90 × 7 = 126/630 - Subtract the two like fractions:
1620/630 - 126/630 = 1620 - 126/630 = 1494/630 - After reducing the fraction, the answer is 83/35
- In mixed form: 213/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/35-36/90 90/70-18/90 90/35-54/90