Subtract 90/63 from 7/4
1st number: 1 3/4, 2nd number: 1 27/63
7/4 - 90/63 is 9/28.
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,
7/4 = 7 × 63/4 × 63 = 441/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
90/63 = 90 × 4/63 × 4 = 360/252 - Subtract the two like fractions:
441/252 - 360/252 = 441 - 360/252 = 81/252 - After reducing the fraction, the answer is 9/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/4-90/63 7/8-90/63 21/4-90/63 7/12-90/63 35/4-90/63 7/20-90/63 49/4-90/63 7/28-90/63