Solve the system by back substitution.
-4x – 8y -2z -6w = 3
-5y -30z-10w= -40
z + w = 2
-5w = -15
The solution set is:
Solve the system by back substitution.
-4x – 8y -2z -6w = 3
-5y -30z-10w= -40
z + w = 2
-5w = -15
The solution set is:
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