Answer:
x= .41666666666
Explanation:
3x + 7 (3x - 11) = 67
PEMDAS
7 times 3x= 21x
7 times 11= 77
3x+21x+77=67
add the like terms together (only the ones that are on the same side of the equal sign).
3x+21x= 24x
24x+77=67
if you need to cancel out 77
what you do to one side you have to to the other
77-77= 0
67-77= -10
24x= -10
then you divide both sides by 24x
24x/24x= x
-10/24x= .41666666666
x= .41666666666
hope this helps :-)