25-07-2017
Mathematics

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There is a value of a such that subtracting a-4 from 4a+16 gives an answer of -25. What is that value of a? (We suggest that you check your answer)
Any help is to be valued highly and much appreciated! Thank you!

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jdoe0001 jdoe0001

25-07-2017

[tex]\bf (4a+16)-(a-4)=-25\implies 4a+16-a+4=-25 \\\\\\ 3a=-25-16-4\implies 3a=-45\implies a=\cfrac{-45}{3}\implies \boxed{a=-15}[/tex]

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