Question

Substitute 5 for x and evaluate the expression 4x - 2

Answer 1

In this case we have an equation of the form $y = 4x-2$

If we have $x = 5$, we must find the value of y, in this way we have:

$y = 4 (5) -2$

We solve the multiplication:

$y = 20-2$

We know that different signs are subtracted and the sign of the major is placed:

$y = 18$

So, when $x = 5$ then$y = 18$

Answer:

The result of evaluating the given expression at $x = 5$ is: $y = 18$

Answer 2

4x -2

substitute 5 for x

4(5)-2

20-2

18