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0mgl0la
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How do you solve? 3x + 3y + 2z = –5
x + y + 3z = –4
2x + 2y + 5z = –7
 2 years ago
 2 years ago
0mgl0la Group Title
How do you solve? 3x + 3y + 2z = –5 x + y + 3z = –4 2x + 2y + 5z = –7
 2 years ago
 2 years ago

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Monkeyball Group TitleBest ResponseYou've already chosen the best response.0
using matrices
 2 years ago

Monkeyball Group TitleBest ResponseYou've already chosen the best response.0
can you set up the augmented matrix?
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.0
add the second and third equations, and find the difference with the first equation, hence solve for z
 2 years ago

Monkeyball Group TitleBest ResponseYou've already chosen the best response.0
or you can do matrices.
 2 years ago

Callisto Group TitleBest ResponseYou've already chosen the best response.2
3x + 3y + 2z = –5 (1) x + y + 3z = –4 (2) 2x + 2y + 5z = –7 (3) (2)x(2) + (2) 2 (x + y + 3z) + (2x + 2y + 5z) = 2(4) + (7) z = 1 z= 1 Sub z=1 into the equations. Solve x and y. If I haven't got that wrong, there should be infinitely many solutions for x and y. Sorry, I made a mistake in the deleted post.
 2 years ago
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