Question

A student says that the solution of 375=x-28 is 347. Explain the student's error and find the correct answer.

Answer 1

Hi there!

Answer:

x=403 and 403=x

Step-by-step explanation:

Because a student says the answer is 347 is not the right answer. The final answer should be x=403 and 403=x.

375=x-28

Switch sides.

x-28=375

add by 28 both sides of an equation.

x-28+28=375+28

simplify.

x=403 and 403=x

403-28=375

28+375=403

Hope this helps!

-Charlie

Answer 2

Answer:

x=403

Step-by-step explanation:

In order to solve this equation you have to clear X and to clear X you have to add 28 in both sides of the equation to eliminate the -28 from the side of the x:

375=x-28

375(+28)=x-28+(28)

375+28=x

x=403

The student instead of adding the 28 put them with negative sign making him withdraw from teh 375 instead of adding, that was his mistake.