SOLUTION: Solve each system graphically.Be sure to check your solution.If a system has an infinite number of solutions, use set-builder notation to write the solution set. If a system has no

Question 448855: Solve each system graphically.Be sure to check your solution.If a system has an infinite number of solutions, use set-builder notation to write the solution set. If a system has no solution state this.Can someone help with this problem because I don't understand it?
b+2a=2,
a=-3-b
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
b+2a=2
a=-3-b
--------
Sub for a in the 1st eqn
b + 2(-3-b) = 2
b - 6 - 2b = 2
-b - 6 = 2
- b = 8
b = -8
---------
a = -3-b = -3 -(-8) = -3 + 8
a = 5

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