Subtract 9/35 from 1/90
1/90 - 9/35 is -31/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 35 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
1/90 = 1 × 7/90 × 7 = 7/630 - Likewise, for the 2nd fraction, since 35 × 18 = 630,
9/35 = 9 × 18/35 × 18 = 162/630 - Subtract the two like fractions:
7/630 - 162/630 = 7 - 162/630 = -155/630 - After reducing the fraction, the answer is -31/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/90-9/35 1/90-18/35 1/90-9/70 3/90-9/35 1/90-27/35 5/90-9/35 1/90-45/35 7/90-9/35 1/90-63/35