Subtract 6/35 from 42/90
42/90 - 6/35 is 31/105.
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,
42/90 = 42 × 7/90 × 7 = 294/630 - Likewise, for the 2nd fraction, since 35 × 18 = 630,
6/35 = 6 × 18/35 × 18 = 108/630 - Subtract the two like fractions:
294/630 - 108/630 = 294 - 108/630 = 186/630 - After reducing the fraction, the answer is 31/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/90-6/35 42/90-12/35 42/90-6/70 42/90-18/35 42/90-30/35 42/90-42/35