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21+2w=54
We simplify the equation to the form, which is simple to understand
21+2w=54
We move all terms containing w to the left and all other terms to the right.
+2w=+54-21
We simplify left and right side of the equation.
+2w=+33
We divide both sides of the equation by 2 to get w.
w=16.5
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