Answer:
18. -12
19. -9
20. -9
Step-by-step explanation:
18. 4-11+(-5)
4-16
-12
19. -8-(3)+2
-11+2
-9
20. 4-7+(-6)
-3+(-6)
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Answers & Comments
Answer:
18. -12
19. -9
20. -9
Step-by-step explanation:
18. 4-11+(-5)
4-16
-12
19. -8-(3)+2
-11+2
-9
20. 4-7+(-6)
-3+(-6)
-9