Answer:
x = 13
Explanation:
23 - 9 = 14
14 / 2 = 7
So both sides should equal to 7.
Set the two expression equal to each other and solve.
x - 6 = 2x - 19
move the 6 to the other side by adding
x = 2x - 19 + 6
x = 2x - 13
then move 2x to the other side by subtracting
x - 2x = -13
-x = -13
divide both sides by -1 to get x
x = -13/-1
x = 13
Check.
plug 13 in for x
x - 6
13 - 6 = 7
2x - 19
2(13) - 19
26 - 19 = 7
so both expressions are equal to each other now and
7 x 2 = 14
14 + 9 = 23
thus x = 13