SOLUTION: 8x+4y=-20 5x-8y=-23

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Question 546879: 8x+4y=-20
5x-8y=-23

Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
8 x + 4 y = -20 .............1
5 x -8 y = -23 .............2
Eliminate y
multiply (1)by 2
Multiply (2) by 1
16 x 8 y = -40
5 x + -8 y = -23
Add the two equations
21 x = -63.000
/ 21
x = -3
plug value of x in (1)
8 x + 4 y = -20
-24 + 4 y = -20
4 y = -20 + 24
4 y = 4
y = 1