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0.2x+1.4=0.4x-4.2
We move all terms to the left:
0.2x+1.4-(0.4x-4.2)=0
We get rid of parentheses
0.2x-0.4x+4.2+1.4=0
We add all the numbers together, and all the variables
-0.2x+5.6=0
We move all terms containing x to the left, all other terms to the right
-0.2x=-5.6
x=-5.6/-0.2
x=27+0.2/0.2
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