2 Answers

Archaeron · Answer 1 · 2017-07-05T10:23:14+0000

Yes, because there is exactly one value of x.
first, you can add -9 to both sides to cancel out the 9, which leaves you with the equation 1/2x = 4
then, simply divide both by 1/2 and you get 8.

Heike · Answer 2 · 2017-07-07T18:43:08+0000

yes 8 is a solution. this is because when replacing 8 with x on a calculator you do 1/2x8+9 and it will give you an answer of 13

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