Subtract 35/90 from 18/28
18/28 - 35/90 is 16/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
18/28 = 18 × 45/28 × 45 = 810/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
35/90 = 35 × 14/90 × 14 = 490/1260 - Subtract the two like fractions:
810/1260 - 490/1260 = 810 - 490/1260 = 320/1260 - After reducing the fraction, the answer is 16/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/28-35/90 18/28-70/90 18/56-35/90 54/28-35/90 18/84-35/90 90/28-35/90