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x+42=2x+19
We simplify the equation to the form, which is simple to understand
x+42=2x+19
We move all terms containing x to the left and all other terms to the right.
+1x-2x=+19-42
We simplify left and right side of the equation.
-1x=-23
We divide both sides of the equation by -1 to get x.
x=23
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