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0.2x + 0.8=-1
We simplify the equation to the form, which is simple to understand
0.2x + 0.8=-1
We move all terms containing x to the left and all other terms to the right.
+ 0.2x=-1-0.8
We simplify left and right side of the equation.
+ 0.2x=-1.8
We divide both sides of the equation by 0.2 to get x.
x=-9
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