Subtract 50/75 from 12/28, Solve 12/28

Subtract 50/75 from 12/28

12/28 - 50/75 is -5/21.

Find the least common denominator or LCM of the two denominators:
LCM of 28 and 75 is 2100

Next, find the equivalent fraction of both fractional numbers with denominator 2100
For the 1st fraction, since 28 × 75 = 2100,
12/28 = 12 × 75/28 × 75 = 900/2100
Likewise, for the 2nd fraction, since 75 × 28 = 2100,
50/75 = 50 × 28/75 × 28 = 1400/2100
Subtract the two like fractions:
900/2100 - 1400/2100 = 900 - 1400/2100 = -500/2100
After reducing the fraction, the answer is -5/21

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