Subtract 1/10 from 8/42
8/42 - 1/10 is 19/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
8/42 = 8 × 5/42 × 5 = 40/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
1/10 = 1 × 21/10 × 21 = 21/210 - Subtract the two like fractions:
40/210 - 21/210 = 40 - 21/210 = 19/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/42-1/10 8/42-2/10 8/84-1/10 8/42-1/20 24/42-1/10 8/42-3/10 8/42-1/30 40/42-1/10 8/42-5/10 8/42-1/50 56/42-1/10 8/42-7/10 8/42-1/70