lunawymlxnx
lunawymlxnx
23-03-2017
Mathematics
contestada
8x + y = -16
-3x + y= -5
Respuesta :
mrillyan
mrillyan
23-03-2017
Solve for x,y by substitution
8x-y=13
y=-8x+1
-------
Substitute for "y" and solve for "x"::
8x - (-8x+1) = 13
---
8x+8x-1 = 13
16x = 14
x = 7/8
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