Subtract 25/50 from 10/21, Solve 10/21

Subtract 25/50 from 10/21

10/21 - 25/50 is -1/42.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 50 is 1050

Next, find the equivalent fraction of both fractional numbers with denominator 1050
For the 1st fraction, since 21 × 50 = 1050,
10/21 = 10 × 50/21 × 50 = 500/1050
Likewise, for the 2nd fraction, since 50 × 21 = 1050,
25/50 = 25 × 21/50 × 21 = 525/1050
Subtract the two like fractions:
500/1050 - 525/1050 = 500 - 525/1050 = -25/1050
After reducing the fraction, the answer is -1/42

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