Answer:
X = -3
Explanation:
(X-9)/6 = (2X-4)/5
cross multiply
5(X-9) = 6(2X-4)
expand the bracket
5X-45 = 12X-24
collect like terms (the signs change when going over the equals sign)
5X-12X = -24+45
-7X = 21
divide both sides by 7
(-7X)/-7 = 21/-7
x = -3