x = -1.8
Step-by-step explanation:
Given equation:
Part I: Cancel the numerators in the equation (a/d = a/f ⇔ 1/d = 1/f)
Part II: Use cross multiplication (a/b = c/d ⇔ a × d = b × c) and simplify:
Part III: Divide -5 to both sides of the equation:
Therefore, the solution is .