SOLUTION: Solve each of the following systems by using either addition or substitution. If a unique solution does not exist, state whether the system is dependent or inconsistent. 10x+2y=

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Question 102924: Solve each of the following systems by using either addition or substitution. If a unique solution does not exist, state whether the system is dependent or inconsistent.
10x+2y=7
y=-5x+3

Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!
1.
2.
Use equation (2) and substitute into (1):
2.

Distributive property.
Simplify.
Additive inverse of (-10*x). Simplify.
Additive inverse of (2*y).
Simplify.
Use this results in equation (1).
1.


Since the equations lead to a false statement, they are inconsistent.

Looking at the graphs of both equations, you see that they have the same slope (parallel) and different intercepts. They will never meet (i.e. have a solution).

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