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x+x-7.5+2x-15+2x-15/3+3(2x-15)-4=828.5
We simplify the equation to the form, which is simple to understand
x+x-7.5+2x-15+2x-15/3+3(2x-15)-4=828.5
Reorder the terms in parentheses
x+x-7.5+2x-15+2x-5+(+6x-45)-4=828.5
Remove unnecessary parentheses
+x+x-7.5+2x-15+2x-5+6x-45-4=+828.5
We move all terms containing x to the left and all other terms to the right.
+1x+1x+2x+2x+6x=+828.5+7.5+15+5+45+4
We simplify left and right side of the equation.
+12x=+905
We divide both sides of the equation by 12 to get x.
x=75.416666666667
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