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-2(k-10)=50
We simplify the equation to the form, which is simple to understand
-2(k-10)=50
Reorder the terms in parentheses
+(-2k+20)=50
Remove unnecessary parentheses
-2k+20=+50
We move all terms containing k to the left and all other terms to the right.
-2k=+50-20
We simplify left and right side of the equation.
-2k=+30
We divide both sides of the equation by -2 to get k.
k=-15
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