Answer:
Explanation:
17. 3(5) + 2 = 15 + 2 = 17
18. 3(x + 4) = 3x + 12
19. 3/(3+4+5)= 3/12= 1/4
17. 13
18. 3x + 12
19. 1/4
17.
18.
19.
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