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-7=2+11a
We simplify the equation to the form, which is simple to understand
-7=2+11a
We move all terms containing a to the left and all other terms to the right.
-11a=+2+7
We simplify left and right side of the equation.
-11a=+9
We divide both sides of the equation by -011 to get a.
a=-0.81818181818182
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