Solve for x: Navigating Nested Absolute Values with the Condition x > 10

Question

{x111=5xgt;10 \begin{cases} ||x-11|-1|=5 \\ x>10 \end{cases}

Video Solution

Step-by-Step Solution

To solve the given problem, let's break it down into manageable steps:

The given equation is x111=5 ||x-11|-1|=5 and the condition is x>10 x > 10 .

Step 1: Solve the outer absolute value: y1=5 ||y|-1|=5 , where y=x11 y = x - 11 .

This implies two scenarios:

  • y1=5    x11=6|y|-1 = 5 \implies |x-11| = 6
  • y1=5    x11=4|y|-1 = -5 \implies |x-11| = -4 (which is not possible since absolute values are non-negative)

So, we only consider x11=6 |x-11| = 6 .

Step 2: Solve the equation x11=6 |x-11| = 6 , giving two possibilities:

  • x11=6    x=17x - 11 = 6 \implies x = 17
  • x11=6    x=5x - 11 = -6 \implies x = 5

Step 3: Apply the condition x>10 x > 10 .

Out of the two possible solutions, x=5 x = 5 does not satisfy x>10 x > 10 .

Therefore, the only valid solution that satisfies both conditions is x=17 x = 17 .

The final solution is x=17 x = 17 .

Answer

x=17 x=17