Question

Which equations are related equations to x + 4 = 15?

Select each correct answer.

A. x = 15 + 4

B. x=15−4

C. x + 4 = 15

D. 4=15−x

Answer 1

Well c is the same exact problem but D could be it to because it easier to solve for x 

Answer 2

B

Explanation:

Hi, remember that when we have an equation the important thing is to know the value of the unknown value, in this case is "x"

So the best answer to this is B

because when you substract -4 in both sides of the equation you obtain
`x+4-4=15-4`

`x=15-4`

D could also be right but there´s no sense in that equation because as I told you we want to know the value of the unknown , and 4 is not an unknown value