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01-07-2017
Mathematics

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Solve this system and list the method that you chose graphing substitution or elimination Y=2x-12
Y=-x+3

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LAGRHA15 LAGRHA15

01-07-2017

Substitution

y = 2x - 12
y = -x + 3

-x + 3 = 2x - 12
+ x + x
-----------------------------
3 = 3x - 12
+ 12 + 12
-----------------------
15 = 3x
------ ------
3 3

x = 5

y = 2(5) - 12
y = 10 - 12
y = -2

The final answer is (5,-2).

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