Subtract 21/32 from 30/50, Solve 30/50

Subtract 21/32 from 30/50

30/50 - 21/32 is -9/160.

Find the least common denominator or LCM of the two denominators:
LCM of 50 and 32 is 800

Next, find the equivalent fraction of both fractional numbers with denominator 800
For the 1st fraction, since 50 × 16 = 800,
30/50 = 30 × 16/50 × 16 = 480/800
Likewise, for the 2nd fraction, since 32 × 25 = 800,
21/32 = 21 × 25/32 × 25 = 525/800
Subtract the two like fractions:
480/800 - 525/800 = 480 - 525/800 = -45/800
After reducing the fraction, the answer is -9/160

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