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5+x+2x=80
We simplify the equation to the form, which is simple to understand
5+x+2x=80
We move all terms containing x to the left and all other terms to the right.
+1x+2x=+80-5
We simplify left and right side of the equation.
+3x=+75
We divide both sides of the equation by 3 to get x.
x=25
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