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-2.12-x=2.18
We move all terms to the left:
-2.12-x-(2.18)=0
We add all the numbers together, and all the variables
-1x-4.3=0
We move all terms containing x to the left, all other terms to the right
-x=4.3
x=4.3/-1
x=-4+0.3/1
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