Subtract 84/90 from 90/35
1st number: 2 20/35, 2nd number: 84/90
90/35 - 84/90 is 172/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 35 × 18 = 630,
90/35 = 90 × 18/35 × 18 = 1620/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
84/90 = 84 × 7/90 × 7 = 588/630 - Subtract the two like fractions:
1620/630 - 588/630 = 1620 - 588/630 = 1032/630 - After reducing the fraction, the answer is 172/105
- In mixed form: 167/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/70-84/90