Answer:
x=7
Step-by-step explanation:
To solve for x, you have to multiply the terms in parenthesis by 3. Then you add 6 to each side of the equal sign. Then you divide each side of the equal sign by 3 to get x=7
[tex]3x-6=15\\3x=15+6\\3x=21\\x=21/3\\x=7[/tex]
