Subtract 90/63 from 18/4
1st number: 4 2/4, 2nd number: 1 27/63
18/4 - 90/63 is 43/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 4 × 63 = 252,
18/4 = 18 × 63/4 × 63 = 1134/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
90/63 = 90 × 4/63 × 4 = 360/252 - Subtract the two like fractions:
1134/252 - 360/252 = 1134 - 360/252 = 774/252 - After reducing the fraction, the answer is 43/14
- In mixed form: 31/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/4-90/63 18/8-90/63 54/4-90/63 18/12-90/63 90/4-90/63 18/20-90/63 18/28-90/63