Subtract 18/80 from 12/45, Solve 12/45

Subtract 18/80 from 12/45

12/45 - 18/80 is 1/24.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 80 is 720

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 45 × 16 = 720,
12/45 = 12 × 16/45 × 16 = 192/720
Likewise, for the 2nd fraction, since 80 × 9 = 720,
18/80 = 18 × 9/80 × 9 = 162/720
Subtract the two like fractions:
192/720 - 162/720 = 192 - 162/720 = 30/720
After reducing the fraction, the answer is 1/24

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