Solve 8a-b(7+a): Evaluating with a=2 and b=1/3

Solve the following expression:

8ab(7+a) 8a-b(7+a)

If

a=2,b=13 a=2,b=\frac{1}{3}

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Set up and solve
00:03 Substitute appropriate values according to the given data and solve
00:16 Always solve parentheses first
00:20 Continue solving according to proper order of operations
00:26 And this is the solution to the question

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Solve the following expression:

8ab(7+a) 8a-b(7+a)

If

a=2,b=13 a=2,b=\frac{1}{3}

2

Step-by-step solution

Note that we have two unknowns, a and b, and we are also given values for them,

Therefore, let's start by substituting these values in the equation instead of the unknowns:

8*2-1/3*(7+2)=

When there is a number before parentheses, it's like having a multiplication sign between them.

Let's start solving according to the order of operations, beginning with the parentheses:

8*2-1/3*(9)=

Now let's continue with multiplication and division:

16-9/3=
16-3=

‎‎‎‎‎‎‎13

And that's the solution!

3

Final Answer

13 13

Practice Quiz

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What will be the result of this algebraic expression:

\( 5x-6 \)

if we place

\( x=8 \)

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