12-x=5-7

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Solution for 12-x=5-7 equation: 



12-x=5-7

We move all terms to the left:

12-x-(5-7)=0

We add all the numbers together, and all the variables

-x+12-(-2)=0

We add all the numbers together, and all the variables

-1x+14=0

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

-x=-14

x=-14/-1

x=+14

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