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k+2/5=1
We simplify the equation to the form, which is simple to understand
k+2/5=1
We move all terms containing k to the left and all other terms to the right.
+1k=+1-0.4
We simplify left and right side of the equation.
+1k=0.6
We divide both sides of the equation by 1 to get k.
k=0.6
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