4x+3+x=12

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Solution for 4x+3+x=12 equation: 



4x+3+x=12

We move all terms to the left:

4x+3+x-(12)=0

We add all the numbers together, and all the variables

5x-9=0

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

5x=9

x=9/5

x=1+4/5

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