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x+(12-x)=11
We move all terms to the left:
x+(12-x)-(11)=0
We add all the numbers together, and all the variables
x+(-1x+12)-11=0
We get rid of parentheses
x-1x+12-11=0
We add all the numbers together, and all the variables
1!=0
There is no solution for this equation
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