Question

If 3x−y=12, what is the value of 8x2y?​

Answer 1

Step-by-step explanation:

First, choose a variable to solve for. In this case we’ll choose to solve for y.

First, subtract 3x from both sides:

-y = 12–3x

Divide both sides by -1:

y = 3x-12

Now substitute for y in the second equation. Also, I don’t know whether you meant to type:

8 * 2y, OR

8x * 2y

so we’ll solve for both.

y = 3x-12

8 * 2y

8*2(3x-12)

16*(3x-12)

48x-192

So that’s the first one simplified as far as it can go. Note that we can’ actually solve for x because we don’t know what the original equation is equal to; that is, it’s missing the equals sign = and a value after it.

Anyways… let’s simplify the other expression!

y = 3x-12

8x*2y

8x*2(3x-12)

16x(3x-12)

(48x^2)-192x

And that’s it! That’s as far as you can go.

Answer 2

HOPE THIS WILL HELP YOU.