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-28-6w=-21
We simplify the equation to the form, which is simple to understand
-28-6w=-21
We move all terms containing w to the left and all other terms to the right.
-6w=-21+28
We simplify left and right side of the equation.
-6w=+7
We divide both sides of the equation by -6 to get w.
w=-1.1666666666667
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