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x(13-4)=145
We simplify the equation to the form, which is simple to understand
x(13-4)=145
Simplifying terms in parentheses
x*(+9)=145
Reorder the terms in parentheses
+(+9x)=145
Remove unnecessary parentheses
+9x=+145
We move all terms containing x to the left and all other terms to the right.
+9x=+145
We simplify left and right side of the equation.
+9x=+145
We divide both sides of the equation by 9 to get x.
x=16.1111111111
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