Subtract 5/21 from 30/50, Solve 30/50

Subtract 5/21 from 30/50

30/50 - 5/21 is 38/105.

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

Next, find the equivalent fraction of both fractional numbers with denominator 1050
For the 1st fraction, since 50 × 21 = 1050,
30/50 = 30 × 21/50 × 21 = 630/1050
Likewise, for the 2nd fraction, since 21 × 50 = 1050,
5/21 = 5 × 50/21 × 50 = 250/1050
Subtract the two like fractions:
630/1050 - 250/1050 = 630 - 250/1050 = 380/1050
After reducing the fraction, the answer is 38/105

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