42x+84=42x+21

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Solution for 42x+84=42x+21 equation: 



42x+84=42x+21

We move all terms to the left:

42x+84-(42x+21)=0

We get rid of parentheses

42x-42x-21+84=0

We add all the numbers together, and all the variables

63!=0

There is no solution for this equation

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