help me on individual project on simultaneous equations

[jackbristow94]

I have been asked to conduct an investigation the information i have been given here, however i am unclear on what i have to do to solve these equations, help!

Communicating and linking your learning


You task is to use and apply your problem solving techniques to solve the simultaneous equations below.


You will be required to explain in English how you approached the problem and the steps to achieve the solution.


You must NOT use the trial and error method, you should


You must present your project in either a written poster / report or in the format of a video. You must not work as a team and you should produce a different report, poster / video each.


Problem 1

1)	x	+	y	−	z	=	4
2)	x	−	2y	+	3z	=	−6
3)	2x	+	3y	+	z	=	7

Problem 2

1)	x	+	y	+	z	=	6
2)	x	−	y	+	z	=	2
3)	x	+	2y	−	z	=	2

Problem 3

1)	x	+	y	−	z	=	1
2)	8x	+	3y	−	6z	=	1
3)	−4x	−	y	+	3z	=	1