Subtract 90/18 from 7/35
1st number: 7/35, 2nd number: 5 0/18
7/35 - 90/18 is -24/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 18 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 35 × 18 = 630,
7/35 = 7 × 18/35 × 18 = 126/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
90/18 = 90 × 35/18 × 35 = 3150/630 - Subtract the two like fractions:
126/630 - 3150/630 = 126 - 3150/630 = -3024/630 - After reducing the fraction, the answer is -24/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/35-90/18 7/70-90/18 7/35-90/36 21/35-90/18 7/35-90/54 49/35-90/18