Subtract 2/35 from 3/90
3/90 - 2/35 is -1/42.
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,
3/90 = 3 × 7/90 × 7 = 21/630 - Likewise, for the 2nd fraction, since 35 × 18 = 630,
2/35 = 2 × 18/35 × 18 = 36/630 - Subtract the two like fractions:
21/630 - 36/630 = 21 - 36/630 = -15/630 - After reducing the fraction, the answer is -1/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/90-2/35 3/90-4/35 3/90-2/70 9/90-2/35 3/90-6/35 15/90-2/35 3/90-10/35 21/90-2/35 3/90-14/35