Question

p

Answer 1

3x + 4y + 3z = 2
–4x – 3y – 3z = 1
Add these two, z is eliminated
we will get
-x+y=3 ---(*)
5x + 2y + z = –2 ---(1)
3x + 4y + 3z = 2 ---(2)
(1)x3 -(2)
z is eliminated
and we will get
12x+2y=-10
6x+y=-5 ---(3)
(*)-(3)
y is eliminated and we will get the value of x
Put the value of x into (*)
we can get the value of y
Then, put the values of x and y into (1)
we can find z

Answer 2

So how do i find the new system of equations

Answer 3

Do you mean that we have to suggest a new system of equations?

Answer 4

Yes i believe so, i really dont understand what the question is asking it says to eliminate z to find the new system of equations

Answer 5

The fastest way is to multiply all equation with a negative side

If you really want to develop a new one, you can set up two equation with x,y,z while the coeff. of z is the same
Then you can set up the third equation with coeff of z not equal to 1, say, -2
You can now get three equations which can be solved by elimination

Answer 6

Thank you so much:)