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0.4x+0.1=0.2x-0.5
We move all terms to the left:
0.4x+0.1-(0.2x-0.5)=0
We get rid of parentheses
0.4x-0.2x+0.5+0.1=0
We add all the numbers together, and all the variables
0.2x+0.6=0
We move all terms containing x to the left, all other terms to the right
0.2x=-0.6
x=-0.6/0.2
x=-2+0.2/0.2
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