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-3.5+x/0.4=-2
We move all terms to the left:
-3.5+x/0.4-(-2)=0
We add all the numbers together, and all the variables
x/0.4-1.5=0
We multiply all the terms by the denominator
x-(1.5)*0.4=0
We add all the numbers together, and all the variables
x-0.6=0
We move all terms containing x to the left, all other terms to the right
x=0.6
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