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9a*3-3a*2-3a+7/3a+2=0
We simplify the equation to the form, which is simple to understand
9a*3-3a*2-3a+7/3a+2=0
We move all terms containing a to the left and all other terms to the right.
+27a-6a-3a+3a=0-2
We simplify left and right side of the equation.
+21a=-2
We divide both sides of the equation by 21 to get a.
a=-0.095238095238095
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