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12=1x-5.4
We move all terms to the left:
12-(1x-5.4)=0
We add all the numbers together, and all the variables
-(x-5.4)+12=0
We get rid of parentheses
-x+5.4+12=0
We add all the numbers together, and all the variables
-1x+17.4=0
We move all terms containing x to the left, all other terms to the right
-x=-17.4
x=-17.4/-1
x=17+0.4/1
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