if 15 = 3x - 6 then find the value of x - 4

Answer 1

We will use linear equation-solving techniques (system of linear equations) to solve the equation 15=3x−6 and find the value of x−4.

Solving for x:

First, we will isolate x on one side of the equation:

Starting with 15=3x−6, we add 6 to both sides to remove the -6 from the right side:

15+6=3x−6+6

Simplifying both sides gives:

21=3x

Next, we divide both sides by 3 to isolate x

21/3=3x/3

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Simplifying, we find:

7=x

Finding the Value of x−4:

Now that we know x=7, we substitute this value into

x−4=7−4

Simplifying gives:

x=3

So, when 15=3x−6, the value of x−4 is 3.

Answer 2

First, solve for x

15=3x-6 Add 6 to both sides of the equation.

21=3x Divide both sides by 3

x=7

Now, what is x-4, Plug in the 7 for x

7-4=3