## anonymous one year ago For the following system of equations, what is the x-value of the solution? -x+2y=6 6y= x+18 a. -18 b. 0 c. -6 d. 3

1. Zale101

Use the substitution method. Solve for one variable from one equation and plug the equation of the same variable into the other equation.

2. Zale101

Clear?

3. Zale101

-x+2y=6 <--i'll choose this equation and i will solve for y 6y= x+18 $$\Large -x+2y=6$$ add x to both sides $$\Large -x+x+2y=6+x$$ $$\Large 2y=6+x$$ divide everything by 2 $$\Large(\frac{1}{2}) 2y=(\frac{1}{2})(6+x)$$ $$\Large y=3+ \frac{1}{2}x$$ Plug what we have for the equation for y into the y in this equation 6y= x+18

4. anonymous

So b then. I got 2x=0 so it would be x=0. Right?

5. anonymous

I did 0. it was right. Thank you!