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9-9.4+3.4a=0
We simplify the equation to the form, which is simple to understand
9-9.4+3.4a=0
We move all terms containing a to the left and all other terms to the right.
+3.4a=0-9+9.4
We simplify left and right side of the equation.
+3.4a=0.4
We divide both sides of the equation by 3.4 to get a.
a=0.117647058824
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