Question

2x-y=4 you solve for y

I don't understand if to solve for y I keep 2x negative and 4 positive or swap the symbols and make 4 negative and 2 positive, or both negative.

Answer 1

To solve the equation 2x - y = 4 for y, rearrange the equation to have y on one side by itself. Solution: y = -4 + 2x.

Step-by-step explanation:

To solve the equation 2x - y = 4 for y, you need to isolate the variable y. This can be done by rearranging the equation to have y on one side by itself. First, move the term 2x to the other side of the equation by subtracting 2x from both sides:

-y = 4 - 2x

Next, you can multiply both sides by -1 to change the sign of y:

y = -4 + 2x

So the solution for y is y = -4 + 2x.