Answer:
-7
Step-by-step explanation:
-4-(-9)-12
a negative + a negative= a positive which end u up with -4+9-12
-4+9=5 5-12=-7
im not really good at explaining so i hope it help
-4-(-9)-12 1. make the 2 negatives into a positive (- -) = +
-4+9-12 2. add -4+9
5-12 3. subtract 12 form 5
