The expression $24x^2-19x-35$ can be written as $(Ax-5)(2Bx+C)$, where $A$, $B$, and $C$ are positive numbers. Find $AB-3C$.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
The expression $24x^2-19x-35$ can be written as $(Ax-5)(2Bx+C)$, where $A$, $B$, and $C$ are positive numbers. Find $AB-3C$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
-9
The expression $24x^2-19x-35$ can be written as $(Ax-5)(2Bx+C)$, where $A$, $B$, and $C$ are positive numbers. Find $AB-3C$.
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