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4(5x+7)=20x+28
We simplify the equation to the form, which is simple to understand
4(5x+7)=20x+28
Reorder the terms in parentheses
+(+20x+28)=20x+28
Remove unnecessary parentheses
+20x+28=+20x+28
We move all terms containing x to the left and all other terms to the right.
+20x-20x=+28-28
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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