9 - 5 + 5 x 0 + 3 =
Do the multiplication first, and rewrite part of it so it makes more sense.
9 +(-5) + 0 + 3 =
As you can see more clearly here, the 5 is ONLY number which has a negative attribute, so even if you decide to go out of order and add 3, you will only get (-2), which will still give you the right answer of 7.