Subtract 10/50 from 3/42, Solve 3/42

Subtract 10/50 from 3/42

3/42 - 10/50 is -9/70.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 50 is 1050

Next, find the equivalent fraction of both fractional numbers with denominator 1050
For the 1st fraction, since 42 × 25 = 1050,
3/42 = 3 × 25/42 × 25 = 75/1050
Likewise, for the 2nd fraction, since 50 × 21 = 1050,
10/50 = 10 × 21/50 × 21 = 210/1050
Subtract the two like fractions:
75/1050 - 210/1050 = 75 - 210/1050 = -135/1050
After reducing the fraction, the answer is -9/70

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