SOLUTION: Hello, I am trying to figure Algebra out and it's not clicking to well. If anyone could help I would appreciate it. Solve by substitution.... 8x - 4y = -40 6x + 38 = y

Algebra ->  Expressions-with-variables -> SOLUTION: Hello, I am trying to figure Algebra out and it's not clicking to well. If anyone could help I would appreciate it. Solve by substitution.... 8x - 4y = -40 6x + 38 = y       Log On


   

Question 148145: Hello, I am trying to figure Algebra out and it's not clicking to well. If anyone could help I would appreciate it.
Solve by substitution....
8x - 4y = -40
6x + 38 = y
Thank you so very much!!!!!!!!!!!!!!!
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
substitution means you substitute one thing for another in the equation

we're given that y=6x+38 __ so we can substitute (6x+38) in place of y in the other equation

8x-4(6x+38)=-40 __ distributing __ 8x-24x-152=-40 __ adding 152 __ -16x=112 __ dividing by -16 __ x=-7

substituting to find y __ y=6(-7)+38 __ y=-42+38 __ y=-4