Question

Question is attached! I will give medal!

Answer 1

May I help?

Answer 2

Yes

Answer 3

Thank you.

Answer 4

What did you get?

Answer 5

I don't know really how to solve this.

Answer 6

Ok.
The principle is to eliminate the variables by add or subtract eqs.

Answer 7

What should I do first though? I thought you had to make the variables equal so they could be eliminated, however, I have 3 equations.

Answer 8

try to multip. the 1st one by -1 and then sum the three eq together!

Answer 9

Ok I did that, and it left me with -2x+0+z=2

Answer 10

0 because the y got eliminated

Answer 11

Great!
can you multi. the 2nd by 2 and add it to the 1st?
What you got?

Answer 12

What do you mean? Multiply -2x-y+z=-3 by 2x-2y-3z=0? Or multiply it by -2x+2y+3=0?

Answer 13

multiply the 2nd equation by 2

Answer 14

OK I got -4x-2y+3z=-6

Answer 15

5 minute please
Sorry

Answer 16

No it should eliminate y
try again


I will be back 5 min
salam

Answer 17

I am grateful to you!
Thank you for the medals!

Answer 18

Sorry for late!
Excuse me, sir!