4+x=12-5

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Solution for 4+x=12-5 equation: 



4+x=12-5

We move all terms to the left:

4+x-(12-5)=0

We add all the numbers together, and all the variables

x+4-7=0

We add all the numbers together, and all the variables

x-3=0

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

x=3

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