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12.3-x=-44.5
We move all terms to the left:
12.3-x-(-44.5)=0
We add all the numbers together, and all the variables
-1x+56.8=0
We move all terms containing x to the left, all other terms to the right
-x=-56.8
x=-56.8/-1
x=56+0.8/1
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