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8(k+5)-2(k+5)=7k+4k
We simplify the equation to the form, which is simple to understand
8(k+5)-2(k+5)=7k+4k
Reorder the terms in parentheses
+(+8k+40)-2*(k+5)=7k+4k
Remove unnecessary parentheses
+8k+40-2+*(+k+5+)=+7k+4k
Reorder the terms in parentheses
+8k+40+(-2k-10)=7k+4k
Remove unnecessary parentheses
+8k+40-2k-10=+7k+4k
We move all terms containing k to the left and all other terms to the right.
+8k-2k-7k-4k=-40+10
We simplify left and right side of the equation.
-5k=-30
We divide both sides of the equation by -5 to get k.
k=6
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