Subtract 7/35 from 10/90
10/90 - 7/35 is -4/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 35 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
10/90 = 10 × 7/90 × 7 = 70/630 - Likewise, for the 2nd fraction, since 35 × 18 = 630,
7/35 = 7 × 18/35 × 18 = 126/630 - Subtract the two like fractions:
70/630 - 126/630 = 70 - 126/630 = -56/630 - After reducing the fraction, the answer is -4/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/90-7/35 10/90-14/35 10/90-7/70 30/90-7/35 10/90-21/35 50/90-7/35 70/90-7/35 10/90-49/35