Question

solve
-x+y+z=4
4x-5y+2z=0
2x+3y+z=11

Answer 1

hi joe lana..

Answer 2

solve -x+y+z=4 4x-5y+2z=0 2x+3y+z=11

Answer 3

i cant help you solving it but the steps and solution is here http://www.wolframalpha.com/input/?i=-x%2By%2Bz%3D4+%2C4x-5y%2B2z%3D0%2C+2x%2B3y%2Bz%3D11+ hope it helps :)

Answer 4

2x + 3y + z = 11
+2(-x +y +z = 4) => 5y + 3z = 19

4x - 5y + 2z = 0
+4(-x +y +z = 4) => -y + 6z = 16

then it's a simple 2 variables 2 equations which you've been practicing

after you solve for y in terms of z or z in terms of y. you use that back into your original equations. and then you use that to start solving for the variables in terms of actual numbers.

it takes a lot more manipulation

Answer 5

z=4+x-y...

substitute it in the las two equations
4-5y+8+2x-2y=0>>> 6x-7y=-8...(1)
2x+3y+4+x-y=11>>> 3x+2y=7....(2)

now multiply (2) by 2

6x-7y=-8
6x+4y=14
.............................subtract

-11y=-22
y=2

6x-7(2)=-8
6x=6
x=1

z=4+x-y = 4+1-2=3

Answer 6

hashir samjha mujhe ye

Answer 7

http://www.twiddla.com/589124
yahaan per aajao