If 3x−y=12, what is the value of 8x2y?
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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.
HOPE THIS WILL HELP YOU.