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OlgaM077 [116]
3 years ago
15

-6x-3y=3,-6x+7y=-7

Mathematics
1 answer:
Pavel [41]3 years ago
7 0
Let's solve this system thru the elimination method:

<span>-6x-3y=3       Mult. all terms by -1 to obtain       6x+3y = -3
-6x+7y=-7      Add your result to the second equation:

</span>  6x+3y = -3
-6x+7y=-7
----------------
    10y = -10, and so y = -1.  Subst. -1 for y in the first equation and then solve the result for x.  You'll find that x = 0.  

Thus, the solution is (0, -1).
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