Answer:
Option B.
Step-by-step explanation:
The given expression is ([tex]6\frac{1}{2}+2\frac{3}{4}-1.5\times (\frac{4.5}{0.5})[/tex]
Since [tex]6\frac{1}{2}+2\frac{3}{4}=8+\frac{1}{2}+\frac{3}{4}[/tex]
= 8 + 1 + [tex]\frac{1}{4}[/tex]
= [tex]9\frac{1}{4}[/tex]
Step 1 [tex]9\frac{1}{4}[/tex] - 1.5(4.5÷0.5)
Step 2 9.25 - 1.5(9)
Step 3 9.25 - 13.5
Step 4 (- 4.25)
Cecilia did her first mistake in step 2.
Option B is the answer.
