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80x+35x+80(x-1)+35(x-1)=345
We simplify the equation to the form, which is simple to understand
80x+35x+80(x-1)+35(x-1)=345
Reorder the terms in parentheses
80x+35x+(+80x-80)+35*(x-1)=345
Remove unnecessary parentheses
+80x+35x+80x-80+35+*(+x-1+)=+345
Reorder the terms in parentheses
80x+35x+80x-80+(+35x-35)=345
Remove unnecessary parentheses
+80x+35x+80x-80+35x-35=+345
We move all terms containing x to the left and all other terms to the right.
+80x+35x+80x+35x=+345+80+35
We simplify left and right side of the equation.
+230x=+460
We divide both sides of the equation by 230 to get x.
x=2
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