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90=3 (2x-1)
We simplify the equation to the form, which is simple to understand
90=3(2x-1)
Reorder the terms in parentheses
90=+(+6x-3)
Remove unnecessary parentheses
+90=+6x-3
We move all terms containing x to the left and all other terms to the right.
-6x=-3-90
We simplify left and right side of the equation.
-6x=-93
We divide both sides of the equation by -06 to get x.
x=15.5
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