Question

For the equation x/3=15 a student found the value of x to be 5.explain the error

what is the correct answer?

Answer 1

Input the answer the student obtained:
x/3=15
x=5
5/3=15
5/3
=1.6667
1.6667≠15

The Correct Answer:
Solve for x.
x/3=15
Multiply both sides by 3.
(x/3)*3=(15)*3
x=45

To check, input the answer in the equation:
45/3=15
15=15

The answer would be 15.

Hope this helps.
-Benjamin

Answer 2

Let plug the variable into the equation.


`x = 5`

`5/3=15`

We can conclude that this is incorrect because
`5/3` does NOT equal
`15`

The correct answer would be:
`15/3 = 5`;
`15/5=3`; or

`3(5) = 15` or
`45/3=15`

All
`4` of these are correct answers.