Explain how to evaluate the expression 4x - 8 for x=5

Mathematics

2 answers:

amm18123 years ago

4 0

Answer: 12

Step-by-step explanation: Here, we have the expression 4x - 8 and we want to evaluate the expression when x is equal to 5.

To evaluate an expression, we simply plug the value of the variable into the expression and solve.

So here, since x is equal to 5, we have 4(5) - 8.

4 x 5 is equal to 20 so we have 20 - 8 which is equal to 12.

So the value of our expression when x is equal to 5 is 12.

kaheart [24]3 years ago

3 0

Answer:

Substitute 5 for x in the expression

Step-by-step explanation:

4x - 8, x=5

4(5) - 8

20 - 8

= 12

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