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0=0.3x+0.8
We move all terms to the left:
0-(0.3x+0.8)=0
We add all the numbers together, and all the variables
-(0.3x+0.8)=0
We get rid of parentheses
-0.3x-0.8=0
We move all terms containing x to the left, all other terms to the right
-0.3x=0.8
x=0.8/-0.3
x=-2+0.2/0.3
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