Question

Cecilia simplified an expression. Her work is shown below.

Where did Cecilia make her first mistake?

Answer 1

Step 2 is the answer.

Answer 2

Option B.

Explanation:

The given expression is (
`6(1)/(2)+2(3)/(4)-1.5* ((4.5)/(0.5))`

Since
`6(1)/(2)+2(3)/(4)=8+(1)/(2)+(3)/(4)`

= 8 + 1 +
`(1)/(4)`

=
`9(1)/(4)`

Step 1
`9(1)/(4)` - 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.