The distributive property is:
[tex]a(b+c)=ab+ac[/tex]We can use this property to distribute the left hand side:
[tex]\begin{gathered} 9\mleft(x+3\mright)=27 \\ 9(x)+9(3)=27 \\ 9x+27=27 \end{gathered}[/tex]Now, we just use algebra to solve for x:
[tex]\begin{gathered} 9x=27-27 \\ 9x=0 \\ x=0 \end{gathered}[/tex]The value of x is 0