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How do you solve? 3x + 3y + 2z = –5
x + y + 3z = –4
2x + 2y + 5z = –7
 one year ago
 one year ago
How do you solve? 3x + 3y + 2z = –5 x + y + 3z = –4 2x + 2y + 5z = –7
 one year ago
 one year ago

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MonkeyballBest ResponseYou've already chosen the best response.0
can you set up the augmented matrix?
 one year ago

UnkleRhaukusBest 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
 one year ago

MonkeyballBest ResponseYou've already chosen the best response.0
or you can do matrices.
 one year ago

CallistoBest 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.
 one year ago
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