SOLUTION: Solve by elimination method 5x + 5y = -13 7x - 2y = 17 Solve by the elimination method x + 7y = 8 -x + 5y = 4

Question 323961: Solve by elimination method
5x + 5y = -13
7x - 2y = 17
Solve by the elimination method
x + 7y = 8
-x + 5y = 4
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Solve by elimination method
5x + 5y = -13
7x - 2y = 17
----------------
Multiply the eqns by something to get the same coefficient for either x or y:
10x + 10y = -26 eqn 1 x 2
35x - 10y = 85 eqn 2 x 5
---------------Add
45x = 59
x = 59/45
---------
Sub for x in eqn 1:
59/9 + 5y = -13 = -117/9
5y = -176/9
y = -176/45
--------------
--------------
Solve by the elimination method
x + 7y = 8
-x + 5y = 4
---------------- Add them, do it like the first one.

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