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-5(3k+7)-k=k+3(1+7k)
We simplify the equation to the form, which is simple to understand
-5(3k+7)-k=k+3(1+7k)
Reorder the terms in parentheses
+(-15k-35)-k=k+3*(1+7k)
Remove unnecessary parentheses
-15k-35-k=+k+3+*(+1+7k+)
Reorder the terms in parentheses
-15k-35-k=k+(+3+21k)
Remove unnecessary parentheses
-15k-35-k=+k+3+21k
We move all terms containing k to the left and all other terms to the right.
-15k-1k-1k-21k=+3+35
We simplify left and right side of the equation.
-38k=+38
We divide both sides of the equation by -38 to get k.
k=-1
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