12-7=4x+9

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Solution for 12-7=4x+9 equation: 



12-7=4x+9

We move all terms to the left:

12-7-(4x+9)=0

We add all the numbers together, and all the variables

-(4x+9)+5=0

We get rid of parentheses

-4x-9+5=0

We add all the numbers together, and all the variables

-4x-4=0

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

-4x=4

x=4/-4

x=-1

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