11. $x + 0.15x = 3.45$

11. $x + 0.15x = 3.45$
Answer
Explanation:
Step1: Combine like - terms
$x+0.15x=(1 + 0.15)x=1.15x$. So the equation becomes $1.15x = 3.45$.
Step2: Solve for x
Divide both sides of the equation $1.15x = 3.45$ by 1.15. We get $x=\frac{3.45}{1.15}=3$.
Answer:
$x = 3$