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0.8x-0.4=0.8x-0.4
We move all terms to the left:
0.8x-0.4-(0.8x-0.4)=0
We get rid of parentheses
0.8x-0.8x+0.4-0.4=0
We add all the numbers together, and all the variables
=0
x=0/1
x=0
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