Question

Solve the system.

Answer 1

system of?

Answer 2

x -3z=8
2x+2y+9z=7
y+5=-2

Answer 3

y = -7

Answer 4

Let meme do that.

Answer 5

LOL

Answer 6

y+5z=-2

Answer 7

x -3z=8
2x+2y+9z=7
y+5z=-2

Answer 8

Should i jump in/

Answer 9

YUP :D You should xD

Answer 10

x = 5
y = 3
z = -1

Answer 11

is that simultaneous equation xD

Answer 12

and that is the answer.

Answer 13

LOL, no working out yur nice xD

Answer 14

how did you get that?

Answer 15

Meme, how'd u do that?

Answer 16

LOL, uswag was talking to you
It will take me a while to work it out xD

Answer 17

i will take alot to work that out.

Answer 18

LOL , w8 did you use wolfram apha ?

Answer 19

Nah, that suck!
i hate that website.

I have CASIO fx-570ES.

Answer 20

ok, is there anyway someone can show me the steps? If i just wanted the answer I can look in the back of the book

Answer 21

LOL , wth is that ? can it solve questions xD

Answer 22

google that.

Answer 23

oh lols , its a calculator xD
I have the CASIO fx-100AU xD

Answer 24

i have that too.

Answer 25

LOL

Answer 26

I have a casio fx-115es :)

Answer 27

While I'm a fan of calculators, (esp. Casio) can someone please show me how to do this step by step?

Answer 28

well that depends on what you know... you can solve it by substitution or with matrices

Answer 29

we've been working with matrices so far, but I'll take either form

Answer 30

x -3z=8
2x+2y+9z=7
y+5z=-2


x=3z+8
y=-5z-2

so middle equation becomes

2(3z+8)+2(-5z-2)+9z=7

solve for z then plug z into the two equations that are solved for x and y

Answer 31

x -3z=8 EQ (1)
2x+2y+9z=7 EQ(2)
y+5z=-2 EQ(3) hi uswag, we can use matrix system here,or just by
equating the system,and by substitution

Answer 32

x -3z=8 EQ1
2x+2y+9z=7 EQ2 2x+2y+9z=7
y+5z=-2 EQ(3) mult by 2, -( 2y+10z=-4) subtract from EQ2
---------------
2x+0 -z=11 EQ4
x -3z=8 EQ1 mult by 2 -(2x -6z=16) subtract
-----------------
0 +5z=-5, z=-5/5=-1 ans sub this to EQ3 and EQ1
y+5(-1)=-2 EQ3 x-3z=8 EQ1
y-5=-2 x-3(-1)=8
y=-2+5=3 ans x+3=8
x=8-3=5 ans
(x,y,z)=(5,3,-1) ans

Answer 33

hi thnx mimi.......

Answer 34

yw xD ,