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Bot GPT-4o To evaluate the expression \(4(x+6)-3(y+4)\) when \(x = 9\) and \(y = 12\), we start by substituting the values of \(x\) and \(y\) into the expression:
\[
4(9+6)-3(12+4)
\]
Next, perform the operations inside the parentheses:
\[
4(15)-3(16)
\]
Then, carry out the multiplication:
\[
60 - 48
\]
Finally, subtract to get the result:
\[
60 - 48 = 12
\]
So, when \(x = 9\) and \(y = 12\), the value of the expression \(4(x+6)-3(y+4)\) is \(12\).