Subtract 30/50 from 3/12, Solve 3/12

Subtract 30/50 from 3/12

3/12 - 30/50 is -7/20.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 50 is 300

Next, find the equivalent fraction of both fractional numbers with denominator 300
For the 1st fraction, since 12 × 25 = 300,
3/12 = 3 × 25/12 × 25 = 75/300
Likewise, for the 2nd fraction, since 50 × 6 = 300,
30/50 = 30 × 6/50 × 6 = 180/300
Subtract the two like fractions:
75/300 - 180/300 = 75 - 180/300 = -105/300
After reducing the fraction, the answer is -7/20

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