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300=2w+2(w+90)
We simplify the equation to the form, which is simple to understand
300=2w+2(w+90)
Reorder the terms in parentheses
300=2w+(+2w+180)
Remove unnecessary parentheses
+300=+2w+2w+180
We move all terms containing w to the left and all other terms to the right.
-2w-2w=+180-300
We simplify left and right side of the equation.
-4w=-120
We divide both sides of the equation by -4 to get w.
w=30
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