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2x+1+x+2x+1-2=40
We simplify the equation to the form, which is simple to understand
2x+1+x+2x+1-2=40
We move all terms containing x to the left and all other terms to the right.
+2x+1x+2x=+40-1-1+2
We simplify left and right side of the equation.
+5x=+40
We divide both sides of the equation by 5 to get x.
x=8
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