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8-0.4x=5
We move all terms to the left:
8-0.4x-(5)=0
We add all the numbers together, and all the variables
-0.4x+3=0
We move all terms containing x to the left, all other terms to the right
-0.4x=-3
x=-3/-0.4
x=7+0.2/0.4
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