9+x+21=7+x-3

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Solution for 9+x+21=7+x-3 equation: 



9+x+21=7+x-3

We move all terms to the left:

9+x+21-(7+x-3)=0

We add all the numbers together, and all the variables

x-(x+4)+9+21=0

We add all the numbers together, and all the variables

x-(x+4)+30=0

We get rid of parentheses

x-x-4+30=0

We add all the numbers together, and all the variables

26!=0

There is no solution for this equation

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