Answer:
k=10
Explanation:
If you do
-2k=-k-10
-2 -2
-------------
-4k-12
----- ------
-4 -4
I think it is wrong sorry if it is
10
-2k= -k-10
Add k to other side:
-2k+k=-k+k-10
-k=-10
Add + to other side which will leave you with:
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