Here is the equation:
[tex]4x+y=z[/tex]
You need to find x. To do that, the variable must be alone on one side. On the right side, you have:
[tex]4x+y[/tex]
To leave 4x by itself, you need to remove y by doing the opposite sign of it. Since it's +y, you need to -y(subtract y) from both sides.
[tex]4x+y-y = z-y \\ 4x=z-y[/tex]
Now the variable is alone. You have 4x and you need to find x alone. To do that, you need to divide both sides by 4.
[tex]\frac{4x}{4} = \frac{z-y}{4}[/tex]
Your answer is:
[tex]x = \frac{z-y}{4}\ \checkmark[/tex]
If you have any questions, feel free to ask! :)
