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30x=200+20x
We simplify the equation to the form, which is simple to understand
30x=200+20x
We move all terms containing x to the left and all other terms to the right.
+30x-20x=+200
We simplify left and right side of the equation.
+10x=+200
We divide both sides of the equation by 10 to get x.
x=20
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