solve the system:
Since y is already missing in the middle equation, we will
eliminate y from the other two equations:
To make the y's cancel we multiply the first one through by 5
Adding corresponding terms causes the y's to cancel:
Now we put that with the original middle equation that
already had y eliminated:
To make the x's cancel we multiply the second one through by -3:
Adding corresponding terms causes the x's to cancel:
Substitute that in
Substitute that and in one of the original
three equations, that contains a y:
So the solution is (x,y,z) = (0,1,4)
Edwin
