7+4x+x=12

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



7+4x+x=12

We move all terms to the left:

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

We add all the numbers together, and all the variables

5x-5=0

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

5x=5

x=5/5

x=1

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