Subtract 45/12 from 84/25, Solve 3 9/25

Subtract 45/12 from 84/25

1^st number: 3 9/25, 2^nd number: 3 9/12

84/25 - 45/12 is -39/100.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 12 is 300

Next, find the equivalent fraction of both fractional numbers with denominator 300
For the 1st fraction, since 25 × 12 = 300,
84/25 = 84 × 12/25 × 12 = 1008/300
Likewise, for the 2nd fraction, since 12 × 25 = 300,
45/12 = 45 × 25/12 × 25 = 1125/300
Subtract the two like fractions:
1008/300 - 1125/300 = 1008 - 1125/300 = -117/300
After reducing the fraction, the answer is -39/100

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