Question

Leticia simplified an expression. Her work is shown below.

4.5/ 1/4 +2 1/2 -0.75* 8

Step 1 18+2 1/2 -0.75* 8
Step 2 18+1.75* 8
Step 3 18+14
Step 4 32


Where did Leticia make her first mistake?
a. step 1
b. step 2
c. step 3
d. step 4

Answer 1

Leticia made her first mistake in step 2 of her work where she incorrectly multiplied 0.75 by 8.

Step-by-step explanation:

Leticia made her first mistake in step 2 of her work. In step 1, she correctly added 18 to 2 1/2 to get 20 1/2. However, in step 2, she incorrectly multiplied 0.75 by 8 to get 14 instead of 6.