Subtract 2/42 from 6/90
6/90 - 2/42 is 2/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 42 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
6/90 = 6 × 7/90 × 7 = 42/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
2/42 = 2 × 15/42 × 15 = 30/630 - Subtract the two like fractions:
42/630 - 30/630 = 42 - 30/630 = 12/630 - After reducing the fraction, the answer is 2/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/90-2/42 6/90-4/42 6/90-2/84 18/90-2/42 6/90-6/42 30/90-2/42 6/90-10/42 42/90-2/42 6/90-14/42