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7(7+8k)+3(k+5)=0
We simplify the equation to the form, which is simple to understand
7(7+8k)+3(k+5)=0
Reorder the terms in parentheses
+(+49+56k)+3*(k+5)=0
Remove unnecessary parentheses
+49+56k+3+*(+k+5+)=0
Reorder the terms in parentheses
+49+56k+(+3k+15)=0
Remove unnecessary parentheses
+49+56k+3k+15=0
We move all terms containing k to the left and all other terms to the right.
+56k+3k=0-49-15
We simplify left and right side of the equation.
+59k=-64
We divide both sides of the equation by 59 to get k.
k=-1.08474576271
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