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0.4(2x-1/2)=3(0.2x+(-2)-4)
We move all terms to the left:
0.4(2x-1/2)-(3(0.2x+(-2)-4))=0
We add all the numbers together, and all the variables
0.4(+2x-1/2)-(3(0.2x+(-2)-4))=0
We multiply parentheses
0.8x-(3(0.2x+(-2)-4))-1/2*0.4=0
We multiply all the terms by the denominator
(0.8x)*2*0.4-((3(0.2x+(-2)-4)))*2*0.4-1=0
We add all the numbers together, and all the variables
(+0.8x)*2*0.4-((3(0.2x+(-2)-4)))*2*0.4-1=0
We move all terms containing x to the left, all other terms to the right
(+0.8x)*2*0.4-((3(0.2x+(-2)-4)))*2*0.4=1
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