ANSWER
-13
Step-by-step explanation
We want to simplify:
-20 + 7
We can rearrange that as:
7 - 20
When a number is subtracting a number that is greater than it, the answer is the same vaue as the greater number subtracting the smaller but with a minus sign.
That is:
7 - 20
= -13
That is the answer.