3x+2y=6 how do i do this question i do not umderstand

You cannot.

Step-by-step explanation:

In order to solve for two variables, you need a system of equations, meaning at least two equations with the same two variables.

You cannot solve for x and y with just one equation as there will be an infinite range of solutions.

Let's say that there was a second equation, like:

x + 2y = 4

You could isolate the x (x = 4 - 2y), then substitute this value in the first equation:

3(4 - 2y) + 2y = 6

12 - 6y + 2y = 6 (expanded)

12 - 4y = 6

4y = 6

y = 6/4 = 3/2 (reduced)

Then, you plug this value of y into the x equation:

x = 4 - 2(3/2)

  = 4 - 3

  = 1

This is how you would solve it if you had another equation/a system of equations.

Hope this helps!