Subtract 90/14 from 42/45
1st number: 42/45, 2nd number: 6 6/14
42/45 - 90/14 is -577/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 14 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
42/45 = 42 × 14/45 × 14 = 588/630 - Likewise, for the 2nd fraction, since 14 × 45 = 630,
90/14 = 90 × 45/14 × 45 = 4050/630 - Subtract the two like fractions:
588/630 - 4050/630 = 588 - 4050/630 = -3462/630 - After reducing the fraction, the answer is -577/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/45-90/14 42/90-90/14 42/45-90/28 42/45-90/42 42/45-90/70 42/45-90/98