Omar tried to solve an equation step by step. \qquad\begin{aligned} 3x& =4.5 \\ \dfrac{3x}3& =\dfrac{4.5}3& \green{\text{step } 1} \\ x& =1.5& \blue{\text{step } 2} \end{aligned} 3x 3 3x x =4.5 = 3 4.5 =1.5 step 1 step 2 find omar's mistake.