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1-x*12=5
We move all terms to the left:
1-x*12-(5)=0
We add all the numbers together, and all the variables
-x*12-4=0
Wy multiply elements
-12x-4=0
We move all terms containing x to the left, all other terms to the right
-12x=4
x=4/-12
x=-1/3
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