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4/2-a/2-3a/5=0
We simplify the equation to the form, which is simple to understand
4/2-a/2-3a/5=0
We move all terms containing a to the left and all other terms to the right.
-0.5a-0.6a=0-2
We simplify left and right side of the equation.
-1.1a=-2
We divide both sides of the equation by -1.1 to get a.
a=1.8181818181818
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