2x - y = 6 6x + 3y = 6 solve please
2x - y = 6, 6x + 3y = 6; (2x - y = 6) * (3); 6x - 3y = 18; (6x - 3y = 18) + (6x + 3y = 6); 12x = 24; x = 24/12; x = 2; 2(2) - y = 6; 4 - y = 6; -y = 6 - 4; -y = 2; y = -2; The solution set is {2, -2}.
Question
Updated 3/12/2015 1:34:04 AM
Edited by Andrew. [3/12/2015 1:31:29 AM]
Rating
3
2x - y = 6, 6x + 3y = 6;
(2x - y = 6) * (3);
6x - 3y = 18;
(6x - 3y = 18) + (6x + 3y = 6);
12x = 24;
x = 24/12;
x = 2;
2(2) - y = 6;
4 - y = 6;
-y = 6 - 4;
-y = 2;
y = -2;
The solution set is {2, -2}.

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