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x(90)=40
We simplify the equation to the form, which is simple to understand
x(90)=40
Reorder the terms in parentheses
+(+90x)=40
Remove unnecessary parentheses
+90x=+40
We move all terms containing x to the left and all other terms to the right.
+90x=+40
We simplify left and right side of the equation.
+90x=+40
We divide both sides of the equation by 90 to get x.
x=0.44444444444444
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