Solve the equation [tex]$9 - 4x = 3x - 4$[/tex].

A. [tex]$x = \frac{13}{7}$[/tex]
B. [tex]$x = 13$[/tex]
C. [tex]$x = -\frac{13}{7}$[/tex]
D. [tex]$x = \frac{7}{13}$[/tex]



Answer :

Let's solve the given equation step by step:

The given equation is:
[tex]\[ 9 - 4x = 3x - 4 \][/tex]

First, we want to move all the terms involving [tex]\(x\)[/tex] to one side of the equation, and the constant terms to the other side. We can start by adding [tex]\(4x\)[/tex] to both sides to eliminate the [tex]\(-4x\)[/tex] on the left side:
[tex]\[ 9 = 3x + 4x - 4 \][/tex]
[tex]\[ 9 = 7x - 4 \][/tex]

Next, we add 4 to both sides to isolate the term involving [tex]\(x\)[/tex]:
[tex]\[ 9 + 4 = 7x \][/tex]
[tex]\[ 13 = 7x \][/tex]

To solve for [tex]\(x\)[/tex], we divide both sides by 7:
[tex]\[ x = \frac{13}{7} \][/tex]

So, the solution to the equation is:
[tex]\[ x = \frac{13}{7} \][/tex]

Now, let's compare this solution with the choices given:
A. [tex]\( x = \frac{13}{7} \)[/tex]
B. [tex]\( x = 13 \)[/tex]
C. [tex]\( x = -\frac{13}{7} \)[/tex]
D. [tex]\( x = \frac{7}{13} \)[/tex]

The correct answer is:
A. [tex]\( x = \frac{13}{7} \)[/tex]