problem

Just plug -4 in anywhere you see x, and solve.

 

The equation is as follows (with 4s plugged in):

7+7(-4)-(-2(-4))+3

 

Then, according to the order of operations, do multiplication first:

7+(-28)-(8)+3

 

Then do addition and subtraction starting from the left, and you're left with:

-26

as the final solution.