math
posted by alainia .
Use the properties of exponents to rewrite each expression so that it contains only positive exponents and simplify the result. The answer is suppose to be 1/9. thank you
(b^1/3a^1)(3a/b)^1

math 
Damon
(1/b / 3/a)(b/3a)
(a/3b)(b/3a)
1/9
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