SOLUTION: 2x-2y=-2 x-4y=5 find the ordered pairs

Algebra ->  Linear-equations -> SOLUTION: 2x-2y=-2 x-4y=5 find the ordered pairs       Log On


   

Question 246813: 2x-2y=-2
x-4y=5 find the ordered pairs
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
2x-2y=-2 multiply by -2 & add
x-4y=5
-4x+4y=4
x-4y=5
--------------
-3x=9
x=9/-3
x=-3 ans.
2*-3-2y=-2
-6-2y=-2
-2y=-2+6
-2y=4
y=4/-2
y=-2 ans.
Proof:
-3-4*-2=5
-3+8=5
5=5