Solve the Expression: Evaluating 5x-6 When x=8

What will be the result of this algebraic expression:

5x6 5x-6

if we place

x=8 x=8

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:07 First, substitute and solve.
00:10 Let's put in the right values from the data we have, and solve the problem step by step.
00:16 Remember, always do multiplication and division before adding and subtracting.
00:22 Now, let's keep solving using the correct order of operations.
00:26 And that's how we find the solution to the problem.

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

What will be the result of this algebraic expression:

5x6 5x-6

if we place

x=8 x=8

2

Step-by-step solution

To answer the question we first need to understand what X is.

X is an unknown, meaning it's a symbol that represents another number, an unknown one, that could be there in its place.

Usually in exercises we'll need to calculate and discover what X is appropriate for each exercise,

but in this case the result is given to us: X=8
Therefore, we can substitute (plug in) the value 8 everywhere X appears in the exercise.

So we get:

5*8-6

40-6
34

3

Final Answer

34

Practice Quiz

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Solve the algebraic expression \( 5x-6 \) given that \( x=0 \).

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