6+x=4x-9

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Solution for 6+x=4x-9 equation: 



6+x=4x-9

We move all terms to the left:

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

We get rid of parentheses

x-4x+9+6=0

We add all the numbers together, and all the variables

-3x+15=0

We move all terms containing x to the left, all other terms to the right

-3x=-15

x=-15/-3

x=+5

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