Question

HELP I NEED HELPPPPPPP WE BARELY STARTED LEARNING THIS

Answer 1

The Answer to the first one is x = 2. Here's an explanation so you can try and solve the others.

Explanation:

First, y = x + 2. Meaning we can substitute the y in 2y. So, we get:

1. 4x + 2(x + 2) = 16
2. 4x + 2x + 4 = 16 Use distributive property
3. 6x + 4 = 16 Add like terms
4. 6x + 4 - 4 = 16 - 4 Subtract 4 on both sides of the equation.
5. 6x = 12 Divide both sides by 6 to isolate x
6. x = 2

For the next equation:

Since both equations equal y, you must put them side by side.

1. 3x - 4 = -2x + 6
2. 3x - 4 + 4 = -2x + 6 - 4 Subtract 4 on both sides
3. 3x = -2x + 2 Add 2x on both sides
4. 3x + 2x = 2 Combine like terms
5. 5x = 2
6. x = 0.4

With the 3rd one just substitute x in 3x with the equation it provides you with (y + 1) and solve (like in the first one).

Same thing with the last one (solve like the second one, side by side), since both equations equal y.

Hope this helps!!