Subtract 3/25 from 54/21, Solve 2 12/21

Subtract 3/25 from 54/21

1^st number: 2 12/21, 2^nd number: 3/25

54/21 - 3/25 is 429/175.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 25 is 525

Next, find the equivalent fraction of both fractional numbers with denominator 525
For the 1st fraction, since 21 × 25 = 525,
54/21 = 54 × 25/21 × 25 = 1350/525
Likewise, for the 2nd fraction, since 25 × 21 = 525,
3/25 = 3 × 21/25 × 21 = 63/525
Subtract the two like fractions:
1350/525 - 63/525 = 1350 - 63/525 = 1287/525
After reducing the fraction, the answer is 429/175
In mixed form: 279/175

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