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1.8=2-0.4x
We move all terms to the left:
1.8-(2-0.4x)=0
We add all the numbers together, and all the variables
-(-0.4x+2)+1.8=0
We get rid of parentheses
0.4x-2+1.8=0
We add all the numbers together, and all the variables
0.4x-0.2=0
We move all terms containing x to the left, all other terms to the right
0.4x=0.2
x=0.2/0.4
x=0.2/0.4
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