Subtract 45/25 from 9/80, Solve 9/80

Subtract 45/25 from 9/80

1^st number: 9/80, 2^nd number: 1 20/25

9/80 - 45/25 is -27/16.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 25 is 400

Next, find the equivalent fraction of both fractional numbers with denominator 400
For the 1st fraction, since 80 × 5 = 400,
9/80 = 9 × 5/80 × 5 = 45/400
Likewise, for the 2nd fraction, since 25 × 16 = 400,
45/25 = 45 × 16/25 × 16 = 720/400
Subtract the two like fractions:
45/400 - 720/400 = 45 - 720/400 = -675/400
After reducing the fraction, the answer is -27/16

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