4x+5x=5x+7x

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Solution for 4x+5x=5x+7x equation: 



4x+5x=5x+7x

We move all terms to the left:

4x+5x-(5x+7x)=0

We add all the numbers together, and all the variables

4x+5x-(+12x)=0

We add all the numbers together, and all the variables

9x-(+12x)=0

We get rid of parentheses

9x-12x=0

We add all the numbers together, and all the variables

-3x=0

x=0/-3

x=0

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