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-0.7a-8=.2a
We simplify the equation to the form, which is simple to understand
-0.7a-8=.2a
We move all terms containing a to the left and all other terms to the right.
-0.7a-0.2a=+8
We simplify left and right side of the equation.
-0.9a=+8
We divide both sides of the equation by -0.9 to get a.
a=-8.8888888888889
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