Question

Find the solution to the system of equations.
x - 4y - 2z = 1
x + 5y + 2z = -1
y + 3z = 10

Answer 1

plug it into your graphing calculator!

Answer 2

i left it in my locker or i would. lol

Answer 3

x=1
y=-2
z=4

Answer 4

how did you do that

Answer 5

set y=10-3z and plug in

Answer 6

Rearrange the equation on the bottom first to get y in terms of z.
Then substitute this into another equation so it has just x and z terms in it.
Then rearrange this to get x in terms of z.
Substitute both y and x in the remaining equation to get an equation in terms of z only.
Then you can solve this and put your answer back in to solve for x and y.

Answer 7

oh, thanks!