21x-7=21x

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Solution for 21x-7=21x equation:


21x-7=21x

We simplify the equation to the form, which is simple to understand 
21x-7=21x

We move all terms containing x to the left and all other terms to the right. 
+21x-21x=+7

We simplify left and right side of the equation. 
0x=+7

0=07

The left and right sides are not equal, therefore there is no solution. This equation is invalid.

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