Subtract 28/35 from 1/9, Solve 1/9

Subtract 28/35 from 1/9

1/9 - 28/35 is -31/45.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 35 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 9 × 35 = 315,
1/9 = 1 × 35/9 × 35 = 35/315
Likewise, for the 2nd fraction, since 35 × 9 = 315,
28/35 = 28 × 9/35 × 9 = 252/315
Subtract the two like fractions:
35/315 - 252/315 = 35 - 252/315 = -217/315
After reducing the fraction, the answer is -31/45

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad