Subtract 7/6 from 42/45
1st number: 42/45, 2nd number: 1 1/6
42/45 - 7/6 is -7/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 6 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
42/45 = 42 × 2/45 × 2 = 84/90 - Likewise, for the 2nd fraction, since 6 × 15 = 90,
7/6 = 7 × 15/6 × 15 = 105/90 - Subtract the two like fractions:
84/90 - 105/90 = 84 - 105/90 = -21/90 - After reducing the fraction, the answer is -7/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/45-7/6 42/45-14/6 42/90-7/6 42/45-7/12 42/45-21/6 42/45-7/18 42/45-35/6 42/45-7/30 42/45-49/6 42/45-7/42