IDNLearn.com: Your reliable source for finding expert answers. Join our community to receive prompt and reliable responses to your questions from experienced professionals.

Find the indicated sum or difference 9-12:
9. 5+7
10. 7+(-9)
11. -5+20
12. -(-11)-7


Sagot :

Answer:

7,-2,15,4

Step-by-step explanation:

9. 7

10. -2

11. 15

12. 4