Question

confused!
What is the solution of the system of equations?
-3x-4y-3z=-7
2x-6y+2z=3
5x-2y+5z=9

Answer 1

Try cancelling one term at a time

Answer 2

I tried cancelling the y term by multiplying the last equation by -2, but that cancels out y but leaves the x and z term with the number of 13

Answer 3

so I got confused with how to cancel the x or z

Answer 4

put them in a matrix and row reduce

Answer 5

do you know anything about matrix operations?

Answer 6

just starting to learn that

Answer 7

not really

Answer 8

ok ill start you off then. take the second term and multiply it by 3. if you do that you will get 6x-18y+6z=9.

Answer 9

then you can make that equal to the third term because they share a common 9

Answer 10

then solve for y. once you have that sub y into the first equation and solve for either x or z

Answer 11

once you get to this step it shouldn't be to hard to know where to go from there