Solve for k
k=3
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\frac{-10}{10}=k-4
Divide both sides by 10.
-1=k-4
Divide -10 by 10 to get -1.
k-4=-1
Swap sides so that all variable terms are on the left hand side.
k=-1+4
Add 4 to both sides.
k=3
Add -1 and 4 to get 3.
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