Subtract 5/50 from 21/54, Solve 21/54

Subtract 5/50 from 21/54

21/54 - 5/50 is 13/45.

Find the least common denominator or LCM of the two denominators:
LCM of 54 and 50 is 1350

Next, find the equivalent fraction of both fractional numbers with denominator 1350
For the 1st fraction, since 54 × 25 = 1350,
21/54 = 21 × 25/54 × 25 = 525/1350
Likewise, for the 2nd fraction, since 50 × 27 = 1350,
5/50 = 5 × 27/50 × 27 = 135/1350
Subtract the two like fractions:
525/1350 - 135/1350 = 525 - 135/1350 = 390/1350
After reducing the fraction, the answer is 13/45

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