12•(х+11)=144

To solve the equation \( 12 \cdot (x + 11) = 144 \), follow these steps:

1. Divide both sides by 12 to isolate the expression in parentheses: \[ x + 11 = \frac{144}{12} \] \[ x + 11 = 12 \]

2. Subtract 11 from both sides to solve for \( x \): \[ x = 12 - 11 \] \[ x = 1 \]

So, the solution to the equation is \( x = 1 \).