5x + y = 8 y = 8 - 5x 2x - y = -1 y = -1 + 2x
y = y
-8 - 5x = -1 + 2x
-5x -2x = -1 + 8
-7x = 7
x = 7/ 7 x= 1
y = -8 -5x
y = -8 - 5(1)
y = -8 - 5
y = -13
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5x + y = 8 y = 8 - 5x 2x - y = -1 y = -1 + 2x
y = y
-8 - 5x = -1 + 2x
-5x -2x = -1 + 8
-7x = 7
x = 7/ 7 x= 1
y = -8 -5x
y = -8 - 5(1)
y = -8 - 5
y = -13