Answer
The solution is $\frac{3}{10}$.
Work Step by Step
5(3-4x)=9
15-20x=9
15-20x-9=9-9
6-20x=0
2(3-10x)=0
3-10x=0
3-10x-3=0-3
-10x=-3
10x=3
$\frac{10x}{10}$=$\frac{3}{10}$
x=$\frac{3}{10}$
The solution is $\frac{3}{10}$.
Check
Let x=$\frac{3}{10}$
5(3-4x)=9
5(3-4*$\frac{3}{10}$)=9
5(3-$\frac{12}{10}$)=9
5*3-5*$\frac{12}{10}$)=9
15-6=9
9=9