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40.2=3a
We simplify the equation to the form, which is simple to understand
40.2=3a
We move all terms containing a to the left and all other terms to the right.
-3a=-40.2
We simplify left and right side of the equation.
-3a=-40.2
We divide both sides of the equation by -03 to get a.
a=13.4
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