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0.2a-0.2=-2
We simplify the equation to the form, which is simple to understand
0.2a-0.2=-2
We move all terms containing a to the left and all other terms to the right.
+ 0.2a=-2 + 0.2
We simplify left and right side of the equation.
+ 0.2a=-1.8
We divide both sides of the equation by 0.2 to get a.
a=-9
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