Answer:
-6
Explanation:
2(10)+2(x-4)=0
20+2x-8=0
20-8+2x=0
12+2x=0
2x=-12
x=-6
12 + 2x
2(10) + 2(x - 4)
20 + 2(x - 4)
20 + 2x - 8
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