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6k-2k/7=40
We simplify the equation to the form, which is simple to understand
6k-2k/7=40
We move all terms containing k to the left and all other terms to the right.
+6k-0.28571428571429k=+40
We simplify left and right side of the equation.
+5.7142857142857k=+40
We divide both sides of the equation by 5.7142857142857 to get k.
k=7
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