Question

Solve the system:
-x-y-3z=-9
z=-3x-1
x=5y-z+23

Answer 1

(But don't actually solve it for me, just help me out?)

Answer 2

well you can either plug in z from the second equation into the first equation...

Answer 3

put the value of z in last equation then it it will convert into x and y then put value of z in first equation it will also get converted into two variable x and y.
now u have two equations with two unknowns .solve it

Answer 4

or grab the x equation and subsitute it into the first equation.

Answer 5

i did that andi ended up with x=8y+24 and y+8x=-12 and i tried to combine them and eliminate 8x but that didnt go well

Answer 6

multiply with 8 in first equation that u got and multiply 1 with second equation now substract both equation u will get value of y

Answer 7

(x=8y+24)8
y+8x=-12

8x=64y+192
-8x=y+12

I'd end up with 65y+204

Answer 8

no u have end up with 65y+204=0
so 65y=-204
y=-204/65

Answer 9

i'm not supposed to end up with fractions

Answer 10

so what r u getting

Answer 11

well i'm gunna try again another way

Answer 12

ur choice