Question

Cecilia simplified an expression. Her work is shown below.

(6 and one-half + 2 and three-fourths) minus 1.5 times (4.5 divided by 0.5)
Step 1 9 and one-fourth minus 1.5 times (4.5 divided by 0.5)
Step 2 7.75 times (4.5 divided by 0.5)
Step 3 7.75 times 9
Step 4 69.75

Where did Cecilia make her first mistake?
step 1
step 2
step 3
step 4

Answer 1

Answer: second step.

Explanation:

you then have to distribute the answer not subtract 9 1/4 from 1.5

you have to do the parenthesis next

4.5/0.5=45/5=9

then

1.5*9= 13.5

then

9.25-13.5 which I think you are capable of solving

Answer 2

• Step 2

Explanation:

Given work on simplification

• (6 and one-half + 2 and three-fourths) minus 1.5 times (4.5 divided by 0.5)

• (6 1/2 + 2 3/4) - 1.5 (4.5 ÷ 0.5)

Step 1 9 and one-fourth minus 1.5 times (4.5 divided by 0.5)

• 9 1/4 - 1.5 (4.5 ÷ 0.5)
• This is ok as first step is solving parenthesis

Step 2 7.75 times (4.5 divided by 0.5)

• 7.75 (4.5 ÷ 0.5)
• Incorrect, subtraction should be the last step