Subtract 45/80 from 50/84, Solve 50/84

Subtract 45/80 from 50/84

50/84 - 45/80 is 11/336.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 80 is 1680

Next, find the equivalent fraction of both fractional numbers with denominator 1680
For the 1st fraction, since 84 × 20 = 1680,
50/84 = 50 × 20/84 × 20 = 1000/1680
Likewise, for the 2nd fraction, since 80 × 21 = 1680,
45/80 = 45 × 21/80 × 21 = 945/1680
Subtract the two like fractions:
1000/1680 - 945/1680 = 1000 - 945/1680 = 55/1680
After reducing the fraction, the answer is 11/336

MathStep (Works offline)

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