Subtract 20/49 from 30/32, Solve 30/32

Subtract 20/49 from 30/32

30/32 - 20/49 is 415/784.

Find the least common denominator or LCM of the two denominators:
LCM of 32 and 49 is 1568

Next, find the equivalent fraction of both fractional numbers with denominator 1568
For the 1st fraction, since 32 × 49 = 1568,
30/32 = 30 × 49/32 × 49 = 1470/1568
Likewise, for the 2nd fraction, since 49 × 32 = 1568,
20/49 = 20 × 32/49 × 32 = 640/1568
Subtract the two like fractions:
1470/1568 - 640/1568 = 1470 - 640/1568 = 830/1568
After reducing the fraction, the answer is 415/784

MathStep (Works offline)

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