Subtract 3/63 from 21/25, Solve 21/25

Subtract 3/63 from 21/25

21/25 - 3/63 is 416/525.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 63 is 1575

Next, find the equivalent fraction of both fractional numbers with denominator 1575
For the 1st fraction, since 25 × 63 = 1575,
21/25 = 21 × 63/25 × 63 = 1323/1575
Likewise, for the 2nd fraction, since 63 × 25 = 1575,
3/63 = 3 × 25/63 × 25 = 75/1575
Subtract the two like fractions:
1323/1575 - 75/1575 = 1323 - 75/1575 = 1248/1575
After reducing the fraction, the answer is 416/525

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