Problem
Solve the linear oquation. \[ 7 x+6=4 x+39 \] Belect the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The solution set is \{\} . (Type an integer or a simplified fraction.) B. The solution set is $\{x \mid x$ is a real number $\}$. C. The solution set is $\varnothing$.
Solution
Step 1 ：Subtract 4x from both sides of the equation to get \(3x + 6 = 39\).
Step 2 ：Subtract 6 from both sides to get \(3x = 33\).
Step 3 ：Divide both sides by 3 to solve for x, giving \(x = 11\).
Step 4 ：The solution set is \(\boxed{\{11\}}\).
