SOLUTION: I can not find guidance on solving systems of linear equations with three variables. Please help! x+y+z=13 10x+12y+7z=129

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: I can not find guidance on solving systems of linear equations with three variables. Please help! x+y+z=13 10x+12y+7z=129      Log On


   



Question 368943: I can not find guidance on solving systems of linear equations with three variables. Please help!
x+y+z=13 10x+12y+7z=129

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
You need three equations to solve for three unknowns.
Do you have another equation?