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(2x-7)3=-21+6x
We simplify the equation to the form, which is simple to understand
(2x-7)3=-21+6x
Reorder the terms in parentheses
(+6x-21)=-21+6x
Remove unnecessary parentheses
+6x-21=-21+6x
We move all terms containing x to the left and all other terms to the right.
+6x-6x=-21+21
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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