Subtract 8/56 from 1/90
1/90 - 8/56 is -83/630.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 56 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 90 × 28 = 2520,
1/90 = 1 × 28/90 × 28 = 28/2520 - Likewise, for the 2nd fraction, since 56 × 45 = 2520,
8/56 = 8 × 45/56 × 45 = 360/2520 - Subtract the two like fractions:
28/2520 - 360/2520 = 28 - 360/2520 = -332/2520 - After reducing the fraction, the answer is -83/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/90-8/56 1/90-16/56 3/90-8/56 1/90-24/56 5/90-8/56 1/90-40/56 7/90-8/56