Question

ALGEBRA HELP FOR MEDAL + FAN!!!
Solve the formula for the variable y.
z = 4x + 2y
Options:
y=z/2-4x
y=z/2-2x
y=z/2+2x
y=z-2x

Answer 1

Alright, so can you show me what you've done?

Answer 2

What you do to the left side you must also do to the right, for example, lets take this expression.

y=x+1
Here, lets solve for x.

What we want to do is minus the 1 on both sides so it gets cancelled on the right and we're left with just the x.
So our equation becomes x = y-1.

Answer 3

do I subtract 4x from both sides or 2y?

Answer 4

Well you're isolating the y, meaning you want y on its own. So subtract 4x.