Answer: None
Explanation:
You have to either solve for x or y by getting x/y in both equations the same value to cancel them out. In my steps I will solve for x:
-20x - 16y = -20
10x + 8y = 10
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1.) Multiply 10x + 8y = 10 by 2
-20x - 16y = -20
20x + 16y = 20
2.) Cancel out values
All parts cancel out.
Answer: No solution