Subtract 90/63 from 7/2
1st number: 3 1/2, 2nd number: 1 27/63
7/2 - 90/63 is 29/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 2 × 63 = 126,
7/2 = 7 × 63/2 × 63 = 441/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
90/63 = 90 × 2/63 × 2 = 180/126 - Subtract the two like fractions:
441/126 - 180/126 = 441 - 180/126 = 261/126 - After reducing the fraction, the answer is 29/14
- In mixed form: 21/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/2-90/63 7/4-90/63 21/2-90/63 7/6-90/63 35/2-90/63 7/10-90/63 49/2-90/63 7/14-90/63