Answer
$9x-10=5$
Work Step by Step
From the problem:
"ten less than:" $something -10$
"ten less than the product of:" $something$ $\times$ $something-10$
"the product of $x$ and nine:" $(x)(9)$
"is five:" $=5$
Combine:
$(x)(9)-10=5$
OR More commonly written as:
$9x-10=5$
