Answer:
18. 8+2*4
8+8
=16
19. 21-12+3
21-15
=6
20. 7+16+2
23+2
=25
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Answer:
18. 8+2*4
8+8
=16
19. 21-12+3
21-15
=6
20. 7+16+2
23+2
=25