Subtract 21/63 from 1/50, Solve 1/50

Subtract 21/63 from 1/50

1/50 - 21/63 is -47/150.

Find the least common denominator or LCM of the two denominators:
LCM of 50 and 63 is 3150

Next, find the equivalent fraction of both fractional numbers with denominator 3150
For the 1st fraction, since 50 × 63 = 3150,
1/50 = 1 × 63/50 × 63 = 63/3150
Likewise, for the 2nd fraction, since 63 × 50 = 3150,
21/63 = 21 × 50/63 × 50 = 1050/3150
Subtract the two like fractions:
63/3150 - 1050/3150 = 63 - 1050/3150 = -987/3150
After reducing the fraction, the answer is -47/150

MathStep (Works offline)

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