IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => IB => Math => Topic started by: abczyx on November 18, 2012, 09:43:44 am

Title: solving systems of equations with 3 variables
Post by: abczyx on November 18, 2012, 09:43:44 am

can someone please solve the following 2 questions.

1)                                  x+y-z = 9
                                    3x+4y+3z= 2
                                    4x+5y+3z= 5


2)                                  x + y =  2
                                    x- y- z= -5
                                   x +3y +z= 9

please help and thanks in advance....
ASAP

Title: Re: solving systems of equations with 3 variables
Post by: astarmathsandphysics on November 18, 2012, 10:35:14 am

here

Title: Re: solving systems of equations with 3 variables
Post by: abczyx on November 22, 2012, 04:30:36 am

THANKS alot!!!!!