All of the following expressions are equivalent except

7 - x
x - 7
- x + 7
7 + (- x)
i think c

All of the following expressions are equivalent except x-7

Two expressions are said to be equivalent if by some arrangement of terms they are equal to each other.

Now by looking at the four given choices we have:

1)

  7-x

2)

   x-7

3)

  -x+7

which is nothing but:

         7-x

4)

7+(-x)

which on opening the parentheses term:

  7-x

Hence, we get that 1) , 3) and 4) expressions are same i.e. they are equivalent.

whereas the expression which is different is: x-7

step-by-step explanation:

where is the questions