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Leticia simplified an expression. Her work is shown below.

4.5÷1/4+2 1/2-.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?
step 1
step 2
step 3
step 4

Respuesta :

charstar
Step 2, she didn't multiply 8 by 0.75.

Hope this helps :)
danielmaduroh

To prove this, let's take the correct steps:

[tex]4.5\div 1/4+2 1/2-.75\times 8 \\ \\ Step \ 1: 18+2 \ 1/2-0.75\times 8 \\ \\ Step \ 2:18+2.5-6 \\ \\ Step\ 3:18-3.5 \\ \\Step \ 4:14.5[/tex]


As you can see, Leticia makes the first mistake in Step 2, that is, she didn't multiply 8 by 0.75.

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