smartguy75555
smartguy75555 smartguy75555
  • 16-12-2019
  • Mathematics
contestada

if 4x + 15 =27 find the value of 6x-9

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TaeKwonDoIsDead
TaeKwonDoIsDead TaeKwonDoIsDead
  • 21-12-2019

Answer:

9

Step-by-step explanation:

To find the value of the expression "6x - 9", we would first need to find the value of "x" and then replace and solve.

The equation we are given is:

4x + 15 = 27

We can solve this by taking the numbers to one side and solving for the variable "x", shown below:

[tex]4x + 15 = 27\\4x=27-15\\4x=12\\x=\frac{12}{4}\\x=3[/tex]

Now we replace "x" with "3" in the expression:

6x - 9

= 6(3) - 9

= 18 - 9

= 9

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