Question

Tino evaluates the expression 3 = . His work is shown below.Step 1: 3 - 5Step 2: 3.5Step 3: 3:4Step 4:35Tino made an error in evaluating the expression. Select the step where the first error is made, along with thecorrect error explanation.

Answer 1

We have

`(3)/(7)/(4)/(5)`

Step 1

`(3)/(7)/(4)/(5)`

Step 2

`(3)/(7)\cdot(5)/(4)`

Step 3

`(3\cdot5)/(7\cdot4)`

Step 4

`(15)/(28)`

As we can see the error was in Step 3, therefore the correct answer is D.