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x=x*2-144
We simplify the equation to the form, which is simple to understand
x=x*2-144
Simplifying:
x=+2x-144
We move all terms containing x to the left and all other terms to the right.
+1x-2x=-144
We simplify left and right side of the equation.
-1x=-144
We divide both sides of the equation by -1 to get x.
x=144
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