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-0.3x-30=x=
We move all terms to the left:
-0.3x-30-(x)=0
We add all the numbers together, and all the variables
-1.3x-30=0
We move all terms containing x to the left, all other terms to the right
-1.3x=30
x=30/-1.3
x=-23+0.099999999999998/1.3
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