Subtract 75/90 from 4/63
4/63 - 75/90 is -97/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
4/63 = 4 × 10/63 × 10 = 40/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
75/90 = 75 × 7/90 × 7 = 525/630 - Subtract the two like fractions:
40/630 - 525/630 = 40 - 525/630 = -485/630 - After reducing the fraction, the answer is -97/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/63-75/90 12/63-75/90 20/63-75/90 28/63-75/90