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0.1x-0.3x=0.2x+1.2
We move all terms to the left:
0.1x-0.3x-(0.2x+1.2)=0
We add all the numbers together, and all the variables
-0.2x-(0.2x+1.2)=0
We get rid of parentheses
-0.2x-0.2x-1.2=0
We add all the numbers together, and all the variables
-0.4x-1.2=0
We move all terms containing x to the left, all other terms to the right
-0.4x=1.2
x=1.2/-0.4
x=-2+0.4/0.4
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