SOLUTION: Solve the system of equations by the addition method. x-4y=-18 -6-4y=64

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Question 34726This question is from textbook Prealgebra & Introductory Algebra
: Solve the system of equations by the addition method.


x-4y=-18
-6-4y=64This question is from textbook Prealgebra & Introductory Algebra

Found 2 solutions by longjonsilver, Prithwis:
Answer by longjonsilver(2297) About Me  (Show Source):
You can put this solution on YOUR website!
please just clarify the second equation

Jon.

Answer by Prithwis(166) About Me  (Show Source):
You can put this solution on YOUR website!
-6-4y=64
=> 4y = -70
=> y = -35/2;
x-4y=-18
=> x = 4y-18 = 4(-35/2)-18 = -88;
Answer: (x,y) = (-88,-35/2)