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

Subtract 45/25 from 9/12

1^st number: 9/12, 2^nd number: 1 20/25

9/12 - 45/25 is -21/20.

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

Next, find the equivalent fraction of both fractional numbers with denominator 300
For the 1st fraction, since 12 × 25 = 300,
9/12 = 9 × 25/12 × 25 = 225/300
Likewise, for the 2nd fraction, since 25 × 12 = 300,
45/25 = 45 × 12/25 × 12 = 540/300
Subtract the two like fractions:
225/300 - 540/300 = 225 - 540/300 = -315/300
After reducing the fraction, the answer is -21/20

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