Math

Question Solve for the absolute value of kk equals 72 minus 9.

Studdy Solution

STEP 1

Assumptions
1. We are given the equation k+9=72 |k| + 9 = 72 .
2. We need to solve for the variable k k .
3. The absolute value function x |x| outputs the non-negative value of x x .

STEP 2

To solve for k k , we first need to isolate the absolute value expression on one side of the equation. We can do this by subtracting 9 from both sides of the equation.
k+99=729 |k| + 9 - 9 = 72 - 9

STEP 3

Simplify both sides of the equation.
k=63 |k| = 63

STEP 4

The equation k=63 |k| = 63 means that k k can be either positive 63 or negative 63, since the absolute value of both 63 63 and 63 -63 is 63 63 .

STEP 5

We set up two separate equations to solve for k k :
1. k=63 k = 63
2. k=63 k = -63

STEP 6

We have found the two possible solutions for k k .
The solutions are k=63 k = 63 and k=63 k = -63 .

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