Kenneth S. answered • 11/13/16
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Expert Help in Algebra/Trig/(Pre)calculus to Guarantee Success in 2018
You typed one left square bracket but no right square bracket to match that.
ASSUMING that the missing ] should be inserted after 9.5, then this is simply a distribution problem.
Multiply the contained-in-brackets quantities by 9, then collect 'like' terms and solve in the usual manner.
