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302=x+(x+9)+x+(x+9)
We simplify the equation to the form, which is simple to understand
302=x+(x+9)+x+(x+9)
Remove unnecessary parentheses
+302=+x+x+9+x+(+x+9+)
Remove unnecessary parentheses
+302=+x+x+9+x+x+9
We move all terms containing x to the left and all other terms to the right.
-1x-1x-1x-1x=+9+9-302
We simplify left and right side of the equation.
-4x=-284
We divide both sides of the equation by -4 to get x.
x=71
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