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23-03-2017
Mathematics

contestada

8x + y = -16
-3x + y= -5

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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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