Step-by-step explanation:
It ain't that hard. Let's take the first one:
y = 4x + 2z
If you wanna make x the subject, you try to get rid of anything by its side. In other words:
[tex]y = 4x + 2z \\ y - 2z = 4x + 2z - 2x \\ y - 2z = 4x \\ \frac{y - 2z}{4} = \frac{4x}{4} \\ x = \frac{y - 2z}{4} [/tex]
Everything boils down to 2 easy steps:
- add or substract to get rid of all the other terms near what you want
- devide by the coefficient
Now let's check the second example:
[tex]z = \frac{x}{4} + 2 \\ z - 2 = \frac{x}{4} \\ 4 \times (z - 2) = 4 \times \frac{x}{4} \\ x = 4(z - 2)[/tex]
That's it :)
If you have any questions please feal free to ask
