Subtract 5/70 from 90/63
1st number: 1 27/63, 2nd number: 5/70
90/63 - 5/70 is 19/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
90/63 = 90 × 10/63 × 10 = 900/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
5/70 = 5 × 9/70 × 9 = 45/630 - Subtract the two like fractions:
900/630 - 45/630 = 900 - 45/630 = 855/630 - After reducing the fraction, the answer is 19/14
- In mixed form: 15/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/63-10/70 90/63-15/70 90/63-25/70 90/63-35/70