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Question 807592: y+z+w=6
z+2w+x=8
3w+x+y=10
x+y+z=9
What would I do to get the answer for this question?
Answer by TimothyLamb(4379)   (Show Source):
You can put this solution on YOUR website! You have 4 linear equations in 4 variables.
Use substitutions among the 4 equations to get one pair of equations in the same 2 variables, for example, get 2 equations in x and y.
Now plug-in a value of x in one of these pair and find y.
Use that point (x,y) to find w and z that satisfy all 4 equations.
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