7x-4+x=12.

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



7x-4+x=12.

We move all terms to the left:

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

We add all the numbers together, and all the variables

7x+x-4-12=0

We add all the numbers together, and all the variables

8x-16=0

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

8x=16

x=16/8

x=2

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