Subtract 42/45 from 1/10
1/10 - 42/45 is -5/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
1/10 = 1 × 9/10 × 9 = 9/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
42/45 = 42 × 2/45 × 2 = 84/90 - Subtract the two like fractions:
9/90 - 84/90 = 9 - 84/90 = -75/90 - After reducing the fraction, the answer is -5/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/10-42/45 1/10-84/45 1/20-42/45 1/10-42/90 3/10-42/45 1/30-42/45 5/10-42/45 1/50-42/45 7/10-42/45 1/70-42/45