Answer:
2/5
Step-by-step explanation:
[tex]\frac{x}{\frac{4}{9} } =\frac{9}{10}[/tex]
[tex](\frac{9}{10})(\frac{4}{9} )=\frac{36}{90}[/tex]
36 divided by 90 is 2/5.
When solving for X you do the opposite to a number if you are moving it to the other side of the problem. so, since x is being divided by 4/9, 4/9 would be multiplied to the opposite or to the 9/10.