-3-(12x+7)+21=9+x-(13x-2)

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Solution for -3-(12x+7)+21=9+x-(13x-2) equation:


-3-(12x+7)+21=9+x-(13x-2)

We simplify the equation to the form, which is simple to understand 
-3-(12x+7)+21=9+x-(13x-2)

Remove unnecessary parentheses
-3-12x-7+21=9+x-(13x-2)

Remove unnecessary parentheses
-3-12x-7+21=9+x-13x+2

We move all terms containing x to the left and all other terms to the right. 
-12x-1x+13x=+9+2+3+7-21

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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