Subtract 1/56 from 7/90
7/90 - 1/56 is 151/2520.
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,
7/90 = 7 × 28/90 × 28 = 196/2520 - Likewise, for the 2nd fraction, since 56 × 45 = 2520,
1/56 = 1 × 45/56 × 45 = 45/2520 - Subtract the two like fractions:
196/2520 - 45/2520 = 196 - 45/2520 = 151/2520
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/90-1/56 7/90-2/56 21/90-1/56 7/90-3/56 35/90-1/56 7/90-5/56 49/90-1/56 7/90-7/56