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 +

Algebra ->  Linear-equations -> 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 +      Log On


   

Question 89545: 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 scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
multiplying the second equation by -2 gives -2y=10x-6 ... adding this result to the first equation gives

10x+2y+(-2y)=7+(10x-6) ... 10x=10x+1 ... this is an inconsistent result