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20(x+9)=4(45+5x)
We simplify the equation to the form, which is simple to understand
20(x+9)=4(45+5x)
Reorder the terms in parentheses
+(+20x+180)=4*(45+5x)
Remove unnecessary parentheses
+20x+180=+4+*(+45+5x+)
Reorder the terms in parentheses
+20x+180=+(+180+20x)
Remove unnecessary parentheses
+20x+180=+180+20x
We move all terms containing x to the left and all other terms to the right.
+20x-20x=+180-180
We simplify left and right side of the equation.
0x=0
0=0
This equation is an identity, so all real numbers are solutions.
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