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x=147-42+30
We simplify the equation to the form, which is simple to understand
x=147-42+30
We move all terms containing x to the left and all other terms to the right.
+1x=+147-42+30
We simplify left and right side of the equation.
+1x=+135
We divide both sides of the equation by 1 to get x.
x=135
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